Fatto matematico: 6534 is a value of n for which 3n and 7n together use each digit exactly once.
Trivia: 6534 is an uninteresting number.
Data storica: November 20th is the day in 1994 that the Angolan government and UNITA rebels sign the Lusaka Protocol in Zambia, ending 19 years of civil war (localized fighting resumes the next year).