Fait général: 2764 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2764 is a boring number.
Culture générale: 2764 is an unremarkable number.
Date historique: July 26th is the day in 1775 that the office that would later become the United States Post Office Department is established by the Second Continental Congress.