Fait général: 86662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 86662 is an uninteresting number.
Culture générale: 86662 is an unremarkable number.
Date historique: April 9th is the day in 475 that Byzantine Emperor Basiliscus issues a circular letter (Enkyklikon) to the bishops of his empire, supporting the Monophysite christological position.