general_fact: 16662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 16662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 16662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: 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.