Fait général: 4615 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4615 is a value of n for which s(f(n)) = 2s(n).
Culture générale: 4615 is an uninteresting number.
Date historique: August 19th is the day in 2003 that a Hamas planned suicide attack on a bus in Jerusalem kills 23 Israelis, 7 of them children in the Jerusalem bus 2 massacre.