Il numero romano MMCDLXVI nel sistema decimale vale: 2466.
MMCDLXVI in latino si scrive duo milia quadringenti sexaginta sex,
mentre in italiano duemilaquattrocentosessantasei.
MMCDXLVII, MMCDXLVIII, MMCDXLIX, MMCDL, MMCDLI, MMCDLII, MMCDLIII, MMCDLIV, MMCDLV, MMCDLVI, MMCDLVII, MMCDLVIII, MMCDLIX, MMCDLX, MMCDLXI, MMCDLXII, MMCDLXIII, MMCDLXIV, MMCDLXV, MMCDLXVII, MMCDLXVIII, MMCDLXIX, MMCDLXX, MMCDLXXI, MMCDLXXII, MMCDLXXIII, MMCDLXXIV, MMCDLXXV, MMCDLXXVI, MMCDLXXVII, MMCDLXXVIII, MMCDLXXIX, MMCDLXXX, MMCDLXXXI, MMCDLXXXII, MMCDLXXXIII, MMCDLXXXIV, MMCDLXXXV