Fatto generale: 66576 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 66576 is an uninteresting number.
Trivia: 66576 is a boring number.
Data storica: April 11th is the day in 1981 that a massive riot in Brixton, South London, results in almost 300 police injuries and 65 serious civilian injuries.