General fact: 5685 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 5685 is a boring number.
Trivia: 5685 is an uninteresting number.
Historical date: July 25th is the day in 2000 that Air France Flight 4590, a Concorde supersonic passenger jet, F-BTSC, crashes just after takeoff from Paris killing all 109 aboard and 4 on the ground.