679340388 has 24 divisors (see below), whose sum is σ = 1586269440. Its totient is φ = 226283680.

The previous prime is 679340377. The next prime is 679340407. The reversal of 679340388 is 883043976.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403 + ... + 36938.

It is an arithmetic number, because the mean of its divisors is an integer number (66094560).

Almost surely, 2^679340388 is an apocalyptic number.

It is an amenable number.

679340388 is an abundant number, since it is smaller than the sum of its proper divisors (906929052).

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

679340388 is a wasteful number, since it uses less digits than its factorization.

679340388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40787 (or 40785 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 679340388 is about 26064.1590694962. The cubic root of 679340388 is about 879.0815089544.

The spelling of 679340388 in words is "six hundred seventy-nine million, three hundred forty thousand, three hundred eighty-eight".