Fatto generale: 66411 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 66411 is an uninteresting number.
Trivia: 66411 is an uninteresting number.
Data storica: October 28th is the day in 456 that the Visigoths brutally sack the Suebi's capital of Braga (Portugal), churches are burnt to the ground.