General fact: 66020 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 66020 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 66020 is an unremarkable number.
Historical date: October 2nd is the day in 1992 that the Carandiru Massacre takes place after a riot in the Carandiru Penitentiary in São Paulo, Brazil.