Numbers / 907

The Number 907

907 is prime: only 1 and 907 divide it evenly; the next prime after 907 is 911. 907's proper divisors total just 1, 906 short of 907, the deficient case most of 907's neighbors share too. 907 has a digit sum of 16; for 907, the digital root works out to 7. 907 shares no factor with 2-12; 907's own divisors start beyond that range. 907 is 1110001011 in binary and 38B in hex; as a Roman numeral it's CMVII.