Fatto generale: 16745 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 16745 is a boring number.
Trivia: 16745 is a boring number.
Data storica: November 4th is the day in 1921 that the Sturmabteilung or SA, whose members were known as "brownshirts", physically assault Adolf Hitler's opposition after his speech in Munich.