679858664 has 32 divisors (see below), whose sum is σ = 1305217800. Its totient is φ = 331883520.

The previous prime is 679858661. The next prime is 679858693. The reversal of 679858664 is 466858976.

It can be written as a sum of positive squares in 4 ways, for example, as 582836164 + 97022500 = 24142^2 + 9850^2 .

It is not an unprimeable number, because it can be changed into a prime (679858661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61772 + ... + 71940.

Almost surely, 2^679858664 is an apocalyptic number.

It is an amenable number.

679858664 is a deficient number, since it is larger than the sum of its proper divisors (625359136).

679858664 is a wasteful number, since it uses less digits than its factorization.

679858664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10373 (or 10369 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The square root of 679858664 is about 26074.0994858883. The cubic root of 679858664 is about 879.3050056691.

The spelling of 679858664 in words is "six hundred seventy-nine million, eight hundred fifty-eight thousand, six hundred sixty-four".