General fact: 81645 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 81645 is an uninteresting number.
Trivia: 81645 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
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.