Fatto matematico: 2805 is the smallest order of a cyclotomic polynomial whose factorization contains 6 as a coefficient.
Trivia: 2805 is an uninteresting number.
Data storica: September 5th is the day in 1945 that Iva Toguri D'Aquino, a Japanese-American suspected of being wartime radio propagandist Tokyo Rose, is arrested in Yokohama.