Numbers / 635

The Number 635

635 is composite: factorization 5 × 127. That gives 635 exactly 4 divisors: 1, 5, 127, 635. 635's proper divisors total just 133, 502 short of 635, the deficient case most of 635's neighbors share too. 635 has a digit sum of 14; for 635, the digital root works out to 5. 635: 5 all divide 635 evenly, out of 2-12. 635 is 1001111011 in binary and 27B in hex; as a Roman numeral it's DCXXXV.