166

166 (one hundred [and] sixty-six) is the natural number following 165 and preceding 167. In mathematics 166 is an even number and a composite number. It is a centered triangular number. Given 166, the Mertens function returns 0. 166 is a Smith number in base 10. In astronomy 166 Rhodope is a dark main belt asteroid, in the Adeona family of asteroids 166P/NEAT is a periodic comet and centaur in the outer Solar System HD 166 is the 6th magnitude star in the constellation Andromeda