Hecho general: 20977 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 20977 is a boring number.
Trivia: 20977 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: June 6th is the day in 1809 that Sweden promulgates a new Constitution, which restores political power to the Riksdag of the Estates after 20 years of Enlightened absolutism.