Some stats from Spotify
Michael's Top 5 songs
1. Billie Jean 70,615,384 spins
2. Man in the Mirror 49,384,230
3. Beat It 45,539,880
4. Love Never Felt So Good (feat. Justin Timberlake) 25,138,793
5. They Don't Care About Us 24,063,425
His account is currently followed by 1,619,378 people. The way I see it only current artists tend to have more followers. As a comparation some of Michael's peers (some of whom are still active):
Madonna 788,476 (Top song: Like A Prayer 16,165,911 spins)
Elvis Presley 707,445 (Top song: Suspicious Minds 22,440,707)
The Beatles 555,944 (Top song: Ain't She Sweet 2,722,709 - note: a lot of the Beatles's songs is not on Spotify)
Prince 259,061 (Top song: When Doves Cry 9,759,272)
Janet Jackson 117,634 (Top song: That's The Way Love Goes 6,519,163)
Queen 1,444,119 (Top song: Bohemian Rhapsody 61,970,266)
Freddie Mercury 30,420 (Top song: Living On My Own 2,700,339)
Bob Marley 1,132,970 (Top song: Three Little Birds 32,476,728)
Stevie Wonder 464,627 (Top song: Superstition 32,849,144)
David Bowie 688,549 (Top song: Under Pressure 17,864,566)
Mariah Carey 580,934 (Top song: All I Want For Christmas Is You 60,762,424)
Whitney Houston 475,667 (Top song: I Will Always Love You 33,235,505)
Marvin Gaye 325,517 (Top song: Ain't No Mountaing High Enough 30,625,796)
George Michael 176,400 (Top song: Careless Whisper 16,609,638)
Bon Jovi 579,570 (Top song: Livin' On A Prayer 44,570,295)
Guns N' Roses 837,562 (Top song: Sweet Child O' Mine 43,380,720)
Metallica 985,561 (Top song: Enter Sandman 29,739,216)
Led Zeppelin 633,490 (Top song: Stariway To Heaven 14,526,736)
Pink Floyd 730,751 (Top song: Wish You Were Here 22,503,421)
Nirvana 1,108,196 (Top song: Smells Like Teen Spirit 74,501,773)
Bruce Springsteen 773,759 (Top song: Dancing in the Dark 24,735,093)
John Lennon 126,921 (Top song: Happy Xmas (War Is Over) 11,342,341)
Genesis 168,776 (Top Song: Invisible Touch 8,464,831)
U2 864,229 (Top song: With or Without You 52,264,130)
Bryan Adams 294,974 (Top song: Summer of '69 29,126,693)
Elton John 469,113 (Top song: Your song 34,125,365)
Radiohead 948,268 (Top song: Creep 51,187,551)
Sting 299,870 (Top song: Fields of Gold 24,803,554)
Rolling Stones 1,005,728 (Top song: Sympathy for the Devil 33,960,663)
Eagles 152,435 (Top song: Hotel California 21,275,073)
Bob Dylan 632,540 (Top song: Like a Rolling Stone 23,579,901)
Aretha Franklin 239,579 (Top song: Respect 25,789,321)
Additionally
Jackson5 134,364 (Top song: I Want You Back 29,621,750)
Jacksons 30,420 (Top song: Blame It on the Boogie 15,240,796)
Some currently hip artists have more followers but even some of the current top artists have less than MJ:
Bruno Mars 2,765,495
Taylor Swift 2,453,431
Beyoncé 2,405,218
Adele 2,394,979
Justin Bieber 2,333,017
Usher 2,149,985
Justin Timberlake 1,310,325
Lady Gaga 1,252,119
Sam Smith 893,494
So I think it's pretty good for MJ. Keep it growing MJFam!