Fait mathématique: 85866 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 85866 is an uninteresting number.
Date historique: February 3rd is the day in 1995 that Astronaut Eileen Collins becomes the first woman to pilot the Space Shuttle as mission STS-63 gets underway from Kennedy Space Center in Florida.