Fait général: 6040 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 6040 is the number of ways to divide 6 couples into pairs where no pair is a couple.
Culture générale: 6040 is an unremarkable number.
Date historique: July 14th is the day in 1948 that Palmiro Togliatti, leader of the Italian Communist Party, is shot and wounded near the Italian Parliament.