679637868 has 96 divisors (see below), whose sum is σ = 1988775936. Its totient is φ = 175848192.

The previous prime is 679637857. The next prime is 679637873. The reversal of 679637868 is 868736976.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 52005 + ... + 63747.

It is an arithmetic number, because the mean of its divisors is an integer number (20716416).

Almost surely, 2^679637868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679637868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994387968).

679637868 is an abundant number, since it is smaller than the sum of its proper divisors (1309138068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679637868 is a wasteful number, since it uses less digits than its factorization.

679637868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11823 (or 11821 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 60.

The square root of 679637868 is about 26069.8651319872. The cubic root of 679637868 is about 879.2098054657.

The spelling of 679637868 in words is "six hundred seventy-nine million, six hundred thirty-seven thousand, eight hundred sixty-eight".