Il numero romano MDCCCLXX nel sistema decimale vale: 1870.
MDCCCLXX in latino si scrive mille octingenti septuaginta,
mentre in italiano milleottocentosettanta.
MDCCCLI, MDCCCLII, MDCCCLIII, MDCCCLIV, MDCCCLV, MDCCCLVI, MDCCCLVII, MDCCCLVIII, MDCCCLIX, MDCCCLX, MDCCCLXI, MDCCCLXII, MDCCCLXIII, MDCCCLXIV, MDCCCLXV, MDCCCLXVI, MDCCCLXVII, MDCCCLXVIII, MDCCCLXIX, MDCCCLXXI, MDCCCLXXII, MDCCCLXXIII, MDCCCLXXIV, MDCCCLXXV, MDCCCLXXVI, MDCCCLXXVII, MDCCCLXXVIII, MDCCCLXXIX, MDCCCLXXX, MDCCCLXXXI, MDCCCLXXXII, MDCCCLXXXIII, MDCCCLXXXIV, MDCCCLXXXV, MDCCCLXXXVI, MDCCCLXXXVII, MDCCCLXXXVIII, MDCCCLXXXIX