Fait général: 16986 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 16986 is a boring number.
Culture générale: 16986 is an uninteresting number.
Date historique: July 3rd is the day in 2001 that a Vladivostok Avia Tupolev Tu-154 jetliner crashes on approach to landing at Irkutsk, Russia killing 145 people.