Fatto generale: 66809 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 66809 is an uninteresting number.
Trivia: 66809 is an unremarkable number.
Data storica: November 30th is the day in 1998 that Exxon and Mobil sign a $73.7 billion USD agreement to merge, thus creating Exxon-Mobil, the world's largest company.