Numbers / 827

The Number 827

827 is prime: only 1 and 827 divide it evenly; the next prime after 827 is 829. 827's proper divisors total just 1, 826 short of 827, the deficient case most of 827's neighbors share too. 827 has a digit sum of 17; for 827, the digital root works out to 8. 827 shares no factor with 2-12; 827's own divisors start beyond that range. 827 is 1100111011 in binary and 33B in hex; as a Roman numeral it's DCCCXXVII.