Fait général: 6738 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 6738 is an uninteresting number.
Culture générale: 6738 is an unremarkable number.
Date historique: June 12th is the day in 1987 that the Central African Republic's former Emperor Jean-Bédel Bokassa is sentenced to death for crimes he had committed during his 13-year rule.