Fait mathématique: 6427 is the number of ways a 6×6 square can be tiled with 1×1 and 2×2 squares.
Culture générale: 6427 is an uninteresting number.
Date historique: August 5th is the day in 1901 that Peter O'Connor sets the first IAAF recognised long jump world record of 24 ft 11.75 in (7.6137 m) The record will stand for 20 years.