Fait mathématique: 1770 is the number of conjugacy classes in the automorphism group of the 13 dimensional hypercube.
Culture générale: 1770 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: November 4th is the day in 1970 that Genie, a 13-year-old feral child is found in Los Angeles, California having been locked in her bedroom for most of her life.