Hecho general: 2622 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 2622 is a value of n for which 7n and 8n together use each digit exactly once.
Trivia: 2622 is an unremarkable number.
Fecha histórica: March 6th is the day in 1946 that Ho Chi Minh signs an agreement with France which recognizes Vietnam as an autonomous state in the Indochinese Federation and the French Union.