679724 has 12 divisors (see below), whose sum is σ = 1201200. Its totient is φ = 336528.

The previous prime is 679709. The next prime is 679733. The reversal of 679724 is 427976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344 + ... + 1215.

It is an arithmetic number, because the mean of its divisors is an integer number (100100).

2⁶⁷⁹⁷²⁴ is an apocalyptic number.

It is an amenable number.

679724 is a deficient number, since it is larger than the sum of its proper divisors (521476).

679724 is a wasteful number, since it uses less digits than its factorization.

679724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 1670 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 679724 is about 824.4537585577. The cubic root of 679724 is about 87.9246945293.

It can be divided in two parts, 67972 and 4, that added together give a palindrome (67976).

The spelling of 679724 in words is "six hundred seventy-nine thousand, seven hundred twenty-four".