Numbers / 695

The Number 695

695 is composite: factorization 5 × 139. That gives 695 exactly 4 divisors: 1, 5, 139, 695. 695's proper divisors total just 145, 550 short of 695, the deficient case most of 695's neighbors share too. 695 has a digit sum of 20; for 695, the digital root works out to 2. 695: 5 all divide 695 evenly, out of 2-12. 695 is 1010110111 in binary and 2B7 in hex; as a Roman numeral it's DCXCV.