Fatto generale: 9563 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 9563 is 9 + 5555 + 666 + 3333.
Trivia: 9563 is an uninteresting number.
Data storica: March 7th is the day in 2009 that the Kepler space observatory, designed to discover Earth-like planets orbiting other stars, is launched.