Fatto generale: 2635 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2635 is the number of necklaces with 6 beads, each one of 5 colors.
Trivia: 2635 is a boring number.
Data storica: March 19th is the day in 1979 that the United States House of Representatives begins broadcasting its day-to-day business via the cable television network C-SPAN.