Fait général: 63640 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 63640 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 63640 is an uninteresting number.
Date historique: March 28th is the day in 1969 that Greek poet and Nobel Prize laureate Giorgos Seferis makes a famous statement on the BBC World Service opposing the junta in Greece.