Fait mathématique: 16598 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 16598 is an uninteresting number.
Date historique: June 10th is the day in 1786 that a landslide dam on the Dadu River created by an earthquake ten days earlier collapses, killing 100,000 in the Sichuan province of China.