679457956 has 6 divisors (see below), whose sum is σ = 1189051430. Its totient is φ = 339728976.

The previous prime is 679457941. The next prime is 679457981. The reversal of 679457956 is 659754976.

It can be written as a sum of positive squares in only one way, i.e., 519840000 + 159617956 = 22800^2 + 12634^2 .

It is a super-2 number, since 2×679457956² = 923326227943395872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679457956.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84932241 + ... + 84932248.

Almost surely, 2^679457956 is an apocalyptic number.

It is an amenable number.

679457956 is a deficient number, since it is larger than the sum of its proper divisors (509593474).

679457956 is a wasteful number, since it uses less digits than its factorization.

679457956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169864493 (or 169864491 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 58.

The square root of 679457956 is about 26066.4143295544. The cubic root of 679457956 is about 879.1322178945.

The spelling of 679457956 in words is "six hundred seventy-nine million, four hundred fifty-seven thousand, nine hundred fifty-six".