Fait général: 4666 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4666 is the number of tilted rectangles with vertices in a 13×13 grid.
Culture générale: 4666 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: October 9th is the day in 1911 that an accidental bomb explosion in Hankou, Wuhan, China leads to the ultimate fall of the Qing Empire.