Fatto generale: 9643 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 9643 is the smallest number that can not be formed using the numbers 2^{0}, 2^{1}, ... , 2^{7}, together with the symbols +, –, × and ÷.
Trivia: 9643 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: May 26th is the day in 1770 that the Orlov Revolt, an attempt to revolt against the Ottoman Empire before the Greek War of Independence, ends in disaster for the Greeks.