Don't think that number is anywhere near correct.
The latest numbers on developer metrics, show DAU of 2.6m, AMU is 7.6 but from what I can establish that is taken from daily log ins through FB.
I've logged in around 12 times today alone.
One of the reasons I seriously disbelieve the user counter of 7.6m it may have had that many from day one. I would not be surprised if it is less than half that number.
Reason they don't knock off deleted or inactive A/C, want to keep it top ranked.![]()