Fait mathématique: 86136 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 86136 is an unremarkable number.
Date historique: October 31st is the day in 1963 that an explosion at the Indiana State Fair Coliseum (now Pepsi Coliseum) in Indianapolis kills 74 people during an ice skating show.