Numbers / 629

The Number 629

629 is composite: factorization 17 × 37. That gives 629 exactly 4 divisors: 1, 17, 37, 629. 629's proper divisors total just 55, 574 short of 629, the deficient case most of 629's neighbors share too. 629 has a digit sum of 17; for 629, the digital root works out to 8. 629 shares no factor with 2-12; 629's own divisors start beyond that range. 629 is 1001110101 in binary and 275 in hex; as a Roman numeral it's DCXXIX.