General fact: 13568 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 13568 is an unremarkable number.
Trivia: 13568 is an uninteresting number.
Historical date: February 22nd is the day in 1957 that Ngo Dinh Diem of South Vietnam survives a communist shooting assassination attempt in Ban Me Thuot.