General fact: 8764 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 8764 is an uninteresting number.
Trivia: 8764 is an unremarkable number.
Historical date: December 29th is the day in 1890 that United States soldiers kill more than 200 Oglala Lakota people with four Hotchkiss guns in the Wounded Knee Massacre.