Fait général: 6413 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 6413 is an unremarkable number.
Culture générale: 6413 is an unremarkable number.
Date historique: July 22nd is the day in 1793 that Alexander Mackenzie reaches the Pacific Ocean becoming the first Euro-American to complete a transcontinental crossing of Canada.