Fatto matematico: 9677 is a prime that remains prime if any digit is deleted.
Trivia: 9677 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 29th is the day in 1874 that Greek politician Charilaos Trikoupis publishes a manifesto in the Athens daily Kairoi entitled "Who's to Blame?.