Numbers / 597

The Number 597

597 is composite: factorization 3 × 199. That gives 597 exactly 4 divisors: 1, 3, 199, 597. 597's proper divisors total just 203, 394 short of 597, the deficient case most of 597's neighbors share too. 597 has a digit sum of 21; for 597, the digital root works out to 3. 597: 3 all divide 597 evenly, out of 2-12. 597 is 1001010101 in binary and 255 in hex; as a Roman numeral it's DXCVII.