Fait général: 6457 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 6457 is a value of n for which the n^{th} prime begins with the digits of n.
Culture générale: 6457 is an unremarkable number.
Date historique: September 4th is the day in 2001 that Tokyo DisneySea opens to the public as part of the Tokyo Disney Resort in Urayasu, Chiba, Japan.