Fait mathématique: 20618 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 20618 is a boring number.
Date historique: June 12th is the day in 1963 that Civil rights leader Medgar Evers is murdered in front of his home in Jackson, Mississippi by Ku Klux Klan member Byron De La Beckwith.