Il numero romano MCLXX nel sistema decimale vale: 1170.
MCLXX in latino si scrive mille centum septuaginta,
mentre in italiano millecentosettanta.
MCLI, MCLII, MCLIII, MCLIV, MCLV, MCLVI, MCLVII, MCLVIII, MCLIX, MCLX, MCLXI, MCLXII, MCLXIII, MCLXIV, MCLXV, MCLXVI, MCLXVII, MCLXVIII, MCLXIX, MCLXXI, MCLXXII, MCLXXIII, MCLXXIV, MCLXXV, MCLXXVI, MCLXXVII, MCLXXVIII, MCLXXIX, MCLXXX, MCLXXXI, MCLXXXII, MCLXXXIII, MCLXXXIV, MCLXXXV, MCLXXXVI, MCLXXXVII, MCLXXXVIII, MCLXXXIX