Fait général: 5604 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 5604 is the number of partitions of 30.
Culture générale: 5604 is an unremarkable number.
Date historique: May 5th is the day in 1215 that Rebel barons renounce their allegiance to King John of England — part of a chain of events leading to the signing of the Magna Carta.