Fait mathématique: 1662 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 1662 is a boring number.
Date historique: July 19th is the day in 1963 that Joe Walker flies a North American X-15 to a record altitude of 106,010 metres (347,800 feet) on X-15 Flight 90.