Fait mathématique: 4064 is a value of n for which s(n) = s(reverse(n)).
Culture générale: 4064 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: February 15th is the day in 1982 that the drilling rig Ocean Ranger sinks during a storm off the coast of Newfoundland, killing 84 workers.