Numbers 1:44-46 NIV

44 These were the men counted by Moses and Aaron1 and the twelve leaders of Israel, each one representing his family.

References for Numbers 1:44

45 All the Israelites twenty years old or more2 who were able to serve in Israel's army were counted according to their families.3

References for Numbers 1:45

46 The total number was 603,550.4

References for Numbers 1:46