Fait général: 2689 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2689 is a boring number.
Culture générale: 2689 is an unremarkable number.
Date historique: May 12th is the day in 1191 that Richard I of England marries Berengaria of Navarre who is crowned Queen consort of England the same day.