Fait général: 2609 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2609 is the number of perfect squared rectangles of order 15.
Culture générale: 2609 is a boring number.
Date historique: February 21st is the day in 1965 that Malcolm X is assassinated at the Audubon Ballroom in New York City by members of the Nation of Islam.