Fatto generale: 86543 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 86543 is an unremarkable number.
Trivia: 86543 is a boring number.
Data storica: December 11th is the day in 2006 that Felipe Calderon Hinojosa, the president of Mexico, launches a military-led offensive to put down the drug cartel violence in the state of Michoacán.