Fatto generale: 2647 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2647 is the index of a prime Euclid number.
Trivia: 2647 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: March 31st is the day in 1492 that Queen Isabella of Castille issues the Alhambra decree, ordering her 150,000 Jewish subjects to convert to Christianity or face expulsion.