general_fact: 16633 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 16633 is an unremarkable number.
trivia: 16633 is an uninteresting number.
historical_date: July 15th is the day in 1789 that Gilbert du Motier, marquis de La Fayette, is named by acclamation colonel-general of the new National Guard of Paris.