Il numero romano MMDCXCVIII nel sistema decimale vale: 2698.
MMDCXCVIII in latino si scrive duo milia sescenti nonaginta octo,
mentre in italiano duemilaseicentonovantotto.
MMDCLXXIX, MMDCLXXX, MMDCLXXXI, MMDCLXXXII, MMDCLXXXIII, MMDCLXXXIV, MMDCLXXXV, MMDCLXXXVI, MMDCLXXXVII, MMDCLXXXVIII, MMDCLXXXIX, MMDCXC, MMDCXCI, MMDCXCII, MMDCXCIII, MMDCXCIV, MMDCXCV, MMDCXCVI, MMDCXCVII, MMDCXCIX, MMDCC, MMDCCI, MMDCCII, MMDCCIII, MMDCCIV, MMDCCV, MMDCCVI, MMDCCVII, MMDCCVIII, MMDCCIX, MMDCCX, MMDCCXI, MMDCCXII, MMDCCXIII, MMDCCXIV, MMDCCXV, MMDCCXVI, MMDCCXVII