General fact: 6789 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 6789 is the largest 4-digit number with increasing digits.
Trivia: 6789 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: August 2nd is the day in 1985 that Delta Air Lines Flight 191, a Lockheed L-1011 TriStar crashes at Dallas/Fort Worth International Airport killing 137.