Fatto generale: 63863 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 63863 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 63863 is a boring number.
Data storica: November 6th is the day in 1986 that Sumburgh disaster – A British International Helicopters Boeing 234LR Chinook crashes 2.5 miles east of Sumburgh Airport killing 45 people.