Fatto generale: 6635 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 6635 is a boring number.
Trivia: 6635 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: March 1st is the day in 1973 that Black September storms the Saudi embassy in Khartoum, Sudan, resulting in the assassination of three Western hostages.