Numbers / 769

The Number 769

769 is prime: only 1 and 769 divide it evenly; the next prime after 769 is 773. 769's proper divisors total just 1, 768 short of 769, the deficient case most of 769's neighbors share too. 769 has a digit sum of 22; for 769, the digital root works out to 4. 769 shares no factor with 2-12; 769's own divisors start beyond that range. 769 is 1100000001 in binary and 301 in hex; as a Roman numeral it's DCCLXIX.