General fact: 85464 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 85464 is an unremarkable number.
Trivia: 85464 is an uninteresting number.
Historical date: December 28th is the day in 1895 that Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.