General fact: 20658 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 20658 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 20658 is an unremarkable number.
Historical date: July 22nd is the day in 1793 that Alexander Mackenzie reaches the Pacific Ocean becoming the first Euro-American to complete a transcontinental crossing of Canada.