Fatto generale: 81656 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 81656 is an unremarkable number.
Trivia: 81656 is an unremarkable number.
Data storica: July 26th is the day in 1974 that Greek Prime Minister Constantinos Karamanlis forms the country's first civil government after seven years of military rule.