Fatto generale: 56613 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 56613 is an unremarkable number.
Trivia: 56613 is an unremarkable number.
Data storica: December 31st is the day in 1992 that Czechoslovakia is peacefully dissolved in what is dubbed by media as the Velvet Divorce, resulting in the creation of the Czech Republic and Slovakia.