general_fact: 59637 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 59637 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 59637 is a boring number.
historical_date: April 12th is the day in 1937 that Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England.