679964 has 6 divisors (see below), whose sum is σ = 1189944. Its totient is φ = 339980.

The previous prime is 679961. The next prime is 679969. The reversal of 679964 is 469976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84992 + ... + 84999.

It is an arithmetic number, because the mean of its divisors is an integer number (198324).

2⁶⁷⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

679964 is a deficient number, since it is larger than the sum of its proper divisors (509980).

679964 is a wasteful number, since it uses less digits than its factorization.

679964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169995 (or 169993 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 679964 is about 824.5992966284. The cubic root of 679964 is about 87.9350415935.

The spelling of 679964 in words is "six hundred seventy-nine thousand, nine hundred sixty-four".