Numbers / 607

The Number 607

607 is prime: only 1 and 607 divide it evenly; the next prime after 607 is 613. 607's proper divisors total just 1, 606 short of 607, the deficient case most of 607's neighbors share too. 607 has a digit sum of 13; for 607, the digital root works out to 4. 607 shares no factor with 2-12; 607's own divisors start beyond that range. 607 is 1001011111 in binary and 25F in hex; as a Roman numeral it's DCVII.