Numbers 1:47

So were all those that were numbered of the children of Israel, by the house of their fathers, from twenty years old and upward, all that were able to go forth to war in Israel;

Even all they that were numbered were six hundred thousand and three thousand and five hundred and fifty.

For the LORD had spoken unto Moses, saying,

Only thou shalt not number the tribe of Levi, neither take the sum of them among the children of Israel: