Hecho general: 8574 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 8574 is a boring number.
Trivia: 8574 is an uninteresting number.
Fecha histórica: June 22nd is the day in 1911 that George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.