Numbers 1:44-46

44 These, are they who were numbered, whom Moses and Aaron and the twelve princes of Israel did number, the princes acting each one for his ancestral house.

45 So then all they who were numbered of the sons of Israel by their ancestral houses, from twenty years old and upwards, every one able to go forth to war in Israel;

46 so then all they who were numbered were six hundred and three thousand and five hundred and fifty.