Hecho general: 86684 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 86684 is a boring number.
Trivia: 86684 is a boring number.
Fecha histórica: May 1st is the day in 1927 that the first cooked meals on a scheduled flight are introduced on an Imperial Airways flight from London to Paris.