Fatto matematico: 6224 is the number of permutations of 8 elements that have 4^{th} power equal to the identity permutation.
Trivia: 6224 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 14th is the day in 1954 that the Hudson Motor Car Company merges with Nash-Kelvinator Corporation forming the American Motors Corporation.