Il numero romano MMCLXVI nel sistema decimale vale: 2166.
MMCLXVI in latino si scrive duo milia centum sexaginta sex,
mentre in italiano duemilacentosessantasei.
MMCXLVII, MMCXLVIII, MMCXLIX, MMCL, MMCLI, MMCLII, MMCLIII, MMCLIV, MMCLV, MMCLVI, MMCLVII, MMCLVIII, MMCLIX, MMCLX, MMCLXI, MMCLXII, MMCLXIII, MMCLXIV, MMCLXV, MMCLXVII, MMCLXVIII, MMCLXIX, MMCLXX, MMCLXXI, MMCLXXII, MMCLXXIII, MMCLXXIV, MMCLXXV, MMCLXXVI, MMCLXXVII, MMCLXXVIII, MMCLXXIX, MMCLXXX, MMCLXXXI, MMCLXXXII, MMCLXXXIII, MMCLXXXIV, MMCLXXXV