Fatto matematico: 20689 is an uninteresting number.
Trivia: 20689 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: August 22nd is the day in 2004 that a version of The Scream and Madonna, two paintings by Edvard Munch, are stolen at gunpoint from a museum in Oslo, Norway.