Fatto generale: 65729 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 65729 is an unremarkable number.
Trivia: 65729 is a boring number.
Data storica: December 16th is the day in 1978 that Cleveland, Ohio becomes the first post-Depression era city to default on its loans, owing $14,000,000 to local banks.