General fact: 86872 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 86872 is a boring number.
Trivia: 86872 is an uninteresting number.
Historical date: November 5th is the day in 1916 that the Kingdom of Poland is proclaimed by the Act of November 5th of the emperors of Germany and Austria-Hungary.