Il numero romano MDCCLXX nel sistema decimale vale: 1770.
MDCCLXX in latino si scrive mille septingenti septuaginta,
mentre in italiano millesettecentosettanta.
MDCCLI, MDCCLII, MDCCLIII, MDCCLIV, MDCCLV, MDCCLVI, MDCCLVII, MDCCLVIII, MDCCLIX, MDCCLX, MDCCLXI, MDCCLXII, MDCCLXIII, MDCCLXIV, MDCCLXV, MDCCLXVI, MDCCLXVII, MDCCLXVIII, MDCCLXIX, MDCCLXXI, MDCCLXXII, MDCCLXXIII, MDCCLXXIV, MDCCLXXV, MDCCLXXVI, MDCCLXXVII, MDCCLXXVIII, MDCCLXXIX, MDCCLXXX, MDCCLXXXI, MDCCLXXXII, MDCCLXXXIII, MDCCLXXXIV, MDCCLXXXV, MDCCLXXXVI, MDCCLXXXVII, MDCCLXXXVIII, MDCCLXXXIX