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 boring number.
Data storica: March 31st is the day in 1949 that the Dominion of Newfoundland joins the Canadian Confederation and becomes the 10th Province of Canada.