Fatto generale: 66745 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 66745 is a boring number.
Trivia: 66745 is an uninteresting number.
Data storica: September 27th is the day in 1605 that the armies of Sweden are defeated by the Polish–Lithuanian Commonwealth in the Battle of Kircholm.