Fatto generale: 707 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 707 is the smallest number whose reciprocal has period 12.
Trivia: 707 is an unremarkable number.
Data storica: December 7th is the day in 1930 that W1XAV in Boston, Massachusetts broadcasts video from the CBS radio orchestra program, The Fox Trappers.