Hecho general: 66496 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 66496 is an unremarkable number.
Trivia: 66496 is an unremarkable number.
Fecha histórica: January 21st is the day in 1968 that a B-52 bomber crashes near Thule Air Base, contaminating the area after its nuclear payload ruptures.