Numbers / 604

The Number 604

604 is composite: factorization 2^2 × 151. That gives 604 exactly 6 divisors: 1, 2, 4, 151, 302, 604. 604's proper divisors total just 460, 144 short of 604, the deficient case most of 604's neighbors share too. 604 has a digit sum of 10; for 604, the digital root works out to 1. 604: 2, 4 all divide 604 evenly, out of 2-12. 604 is 1001011100 in binary and 25C in hex; as a Roman numeral it's DCIV.