Fatto matematico: 97845 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 97845 is an unremarkable number.
Data storica: November 21st is the day in 1969 that U.S. President Richard Nixon and Japanese Premier Eisaku Sato agree in Washington, D.C. on the return of Okinawa to Japanese control in 1972.