Hecho matemático: 64874 is an unremarkable number.
Trivia: 64874 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: August 13th is the day in 1536 that Buddhist monks from Kyōto's Enryaku-ji temple set fire to 21 Nichiren temples throughout in what will be known as the Tenbun Hokke Disturbance.