Fatto matematico: 7767 is an uninteresting number.
Trivia: 7767 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: April 6th is the day in 1994 that the Rwandan Genocide begins when the aircraft carrying Rwandan president Juvénal Habyarimana and Burundian president Cyprien Ntaryamira is shot down.