Hecho general: 65441 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 65441 is an unremarkable number.
Trivia: 65441 is an unremarkable number.
Fecha histórica: March 3rd is the day in 2009 that the building of the Historisches Archiv der Stadt Köln (Historical Archives) in Cologne, Germany, collapses.