Hecho matemático: 7712 is the number of necklaces (that can't be turned over) possible with 17 beads, each being one of 2 colors.
Trivia: 7712 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: February 10th is the day in 1798 that Louis Alexandre Berthier invades Rome, proclaims a Roman Republic on February 15 and then on February 20 takes Pope Pius VI prisoner.