Fatto generale: 7688 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 7688 is an uninteresting number.
Trivia: 7688 is an unremarkable number.
Data storica: January 17th is the day in 1873 that a group of Modoc warriors defeats the United States Army in the First Battle of the Stronghold, a part of the Modoc War.