general_fact: 15662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 15662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 15662 is an uninteresting number.
historical_date: November 17th is the day in 1973 that the Athens Polytechnic Uprising against the military regime ends in a bloodshed in the Greek capital.