Fait général: 63500 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 63500 is a boring number.
Culture générale: 63500 is a boring number.
Date historique: November 8th is the day in 1971 that Led Zeppelin releases "Led Zeppelin IV," which becomes the third-best-selling album ever in the US.