Fait mathématique: 7663 is the product of two primes which are reverses of each other.
Culture générale: 7663 is an uninteresting number.
Date historique: December 23rd is the day in 2002 that a MQ-1 Predator is shot down by an Iraqi MiG-25, making it the first time in history that an aircraft and an unmanned drone had engaged in combat.