Fatto generale: 64897 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 64897 is a boring number.
Trivia: 64897 is an unremarkable number.
Data storica: September 5th is the day in 1862 that James Glaisher, pioneering meteorologist and Henry Tracey Coxwell break world record for altitude whilst collecting data in their balloon.