Fatto generale: 63683 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 63683 is an uninteresting number.
Trivia: 63683 is an uninteresting number.
Data storica: May 10th is the day in 1877 that Romania declares itself independent from the Ottoman Empire following the Senate adoption of Mihail Kogălniceanu's Declaration of Independence.