Fatto generale: 64917 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 64917 is an uninteresting number.
Trivia: 64917 is an unremarkable number.
Data storica: September 25th is the day in 1868 that the Imperial Russian steam frigate Alexander Neuski is shipwrecked off Jutland while carrying Grand Duke Alexei of Russia.