Numbers / 707

The Number 707

707 is composite: factorization 7 × 101. That gives 707 exactly 4 divisors: 1, 7, 101, 707. 707's proper divisors total just 109, 598 short of 707, the deficient case most of 707's neighbors share too. 707 is also a palindrome, since 707 reads identically forwards and backwards. 707 has a digit sum of 14; for 707, the digital root works out to 5. 707: 7 all divide 707 evenly, out of 2-12. 707 is 1011000011 in binary and 2C3 in hex; as a Roman numeral it's DCCVII.