Il numero romano MMDCLVI nel sistema decimale vale: 2656.
MMDCLVI in latino si scrive duo milia sescenti quinquaginta sex,
mentre in italiano duemilaseicentocinquantasei.
MMDCXXXVII, MMDCXXXVIII, MMDCXXXIX, MMDCXL, MMDCXLI, MMDCXLII, MMDCXLIII, MMDCXLIV, MMDCXLV, MMDCXLVI, MMDCXLVII, MMDCXLVIII, MMDCXLIX, MMDCL, MMDCLI, MMDCLII, MMDCLIII, MMDCLIV, MMDCLV, MMDCLVII, MMDCLVIII, MMDCLIX, MMDCLX, MMDCLXI, MMDCLXII, MMDCLXIII, MMDCLXIV, MMDCLXV, MMDCLXVI, MMDCLXVII, MMDCLXVIII, MMDCLXIX, MMDCLXX, MMDCLXXI, MMDCLXXII, MMDCLXXIII, MMDCLXXIV, MMDCLXXV