Hecho general: 63353 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 63353 is a boring number.
Trivia: 63353 is an unremarkable number.
Fecha histórica: June 14th is the day in 1287 that Kublai Khan defeated the force of Nayan and other traditionalist Borjigin princes in East Mongolia and Manchuria.