Hecho matemático: 6791 is a value of n for which n and 8n together use each digit 1-9 exactly once.
Trivia: 6791 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: August 4th is the day in 1790 that a newly passed tariff act creates the Revenue Cutter Service (the forerunner of the United States Coast Guard).