Il numero romano MDCCCVI nel sistema decimale vale: 1806.
MDCCCVI in latino si scrive mille octingenti sex,
mentre in italiano milleottocentosei.
MDCCLXXXVII, MDCCLXXXVIII, MDCCLXXXIX, MDCCXC, MDCCXCI, MDCCXCII, MDCCXCIII, MDCCXCIV, MDCCXCV, MDCCXCVI, MDCCXCVII, MDCCXCVIII, MDCCXCIX, MDCCC, MDCCCI, MDCCCII, MDCCCIII, MDCCCIV, MDCCCV, MDCCCVII, MDCCCVIII, MDCCCIX, MDCCCX, MDCCCXI, MDCCCXII, MDCCCXIII, MDCCCXIV, MDCCCXV, MDCCCXVI, MDCCCXVII, MDCCCXVIII, MDCCCXIX, MDCCCXX, MDCCCXXI, MDCCCXXII, MDCCCXXIII, MDCCCXXIV, MDCCCXXV