Fatto generale: 4065 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4065 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 4065 is an unremarkable number.
Data storica: February 16th is the day in 1249 that Andrew of Longjumeau is dispatched by Louis IX of France as his ambassador to meet with Mongol Khagan of the Mongol Empire.