Il numero romano MMMCMLXVIII nel sistema decimale vale: 3968.
MMMCMLXVIII in latino si scrive tria milia nongenti sexaginta octo,
mentre in italiano tremilanovecentosessantotto.
MMMCMXLIX, MMMCML, MMMCMLI, MMMCMLII, MMMCMLIII, MMMCMLIV, MMMCMLV, MMMCMLVI, MMMCMLVII, MMMCMLVIII, MMMCMLIX, MMMCMLX, MMMCMLXI, MMMCMLXII, MMMCMLXIII, MMMCMLXIV, MMMCMLXV, MMMCMLXVI, MMMCMLXVII, MMMCMLXIX, MMMCMLXX, MMMCMLXXI, MMMCMLXXII, MMMCMLXXIII, MMMCMLXXIV, MMMCMLXXV, MMMCMLXXVI, MMMCMLXXVII, MMMCMLXXVIII, MMMCMLXXIX, MMMCMLXXX, MMMCMLXXXI, MMMCMLXXXII, MMMCMLXXXIII, MMMCMLXXXIV, MMMCMLXXXV, MMMCMLXXXVI, MMMCMLXXXVII