Fait général: 6386 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 6386 is an uninteresting number.
Culture générale: 6386 is a boring number.
Date historique: June 25th is the day in 1978 that the rainbow flag representing gay pride is flown for the first time in the San Francisco Gay Freedom Day Parade.