Fait général: 6385 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 6385 is the number of ways to stack 18 pennies in a line so that each penny lies on the table or on two pennies.
Culture générale: 6385 is a boring number.
Date historique: June 24th is the day in 2010 that John Isner of the United States defeats Nicolas Mahut of France at Wimbledon, in the longest match in professional tennis history.