Lewis & Short

septingenti, ae, a, num. adj. [septemcentum], seven hundred: anni, Enn. ap. Varr. R. R. 3, 1, 2 (Ann. v. 493 Vahl.); cf.: annorum septingentorum memoria, Cic. Or. 34, 120: nummi, Plaut. Rud. 5, 2, 39: milia passuum, Cic. Quint. 25, 78: stadia, Plin. 3, 5, 11, § 76: milites, Liv. 23, 20, 1: naves, Curt. 10, 1, 19.
Absol.: septingenta Tito debet Lupus (sc. sestertia), seven hundred thousand sesterces, Mart. 7, 10, 7.