Fait général: 1787 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1787 is the number of different arrangements (up to rotation and reflection) of 12 non-attacking queens on a 12×12 chessboard.
Culture générale: 1787 is an unremarkable number.
Date historique: November 21st is the day in 2004 that the second round of the Ukrainian presidential election is held, giving rise to massive protests and controversy over the election's integrity.