Il numero romano MCCXVII nel sistema decimale vale: 1217.
MCCXVII in latino si scrive mille ducenti septemdecim,
mentre in italiano milleduecentodiciassette.
MCXCVIII, MCXCIX, MCC, MCCI, MCCII, MCCIII, MCCIV, MCCV, MCCVI, MCCVII, MCCVIII, MCCIX, MCCX, MCCXI, MCCXII, MCCXIII, MCCXIV, MCCXV, MCCXVI, MCCXVIII, MCCXIX, MCCXX, MCCXXI, MCCXXII, MCCXXIII, MCCXXIV, MCCXXV, MCCXXVI, MCCXXVII, MCCXXVIII, MCCXXIX, MCCXXX, MCCXXXI, MCCXXXII, MCCXXXIII, MCCXXXIV, MCCXXXV, MCCXXXVI