Hecho general: 9563 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 9563 is 9 + 5555 + 666 + 3333.
Trivia: 9563 is an uninteresting number.
Fecha histórica: March 7th is the day in 1799 that Napoleon Bonaparte captures Jaffa in Palestine and his troops proceed to kill more than 2,000 Albanian captives.