Hecho general: 6392 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 6392 is a boring number.
Trivia: 6392 is an unremarkable number.
Fecha histórica: July 1st is the day in 1881 that General Order 70, the culmination of the Cardwell and Childers reforms of the British Army, comes into effect.