Fatto generale: 4064 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4064 is a value of n for which s(n) = s(reverse(n)).
Trivia: 4064 is an unremarkable number.
Data storica: February 15th is the day in 1991 that the Visegrád Agreement, establishing cooperation to move toward free-market systems, is signed by the leaders of Czechoslovakia, Hungary and Poland.