Hecho matemático: 86885 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 86885 is an unremarkable number.
Fecha histórica: November 18th is the day in 1421 that a seawall at the Zuiderzee dike in the Netherlands breaks, flooding 72 villages and killing about 10,000 people.