679057398 has 16 divisors (see below), whose sum is σ = 1509016560. Its totient is φ = 226352448.

The previous prime is 679057381. The next prime is 679057439. The reversal of 679057398 is 893750976.

679057398 is a `hidden beast` number, since 67 + 9 + 0 + 573 + 9 + 8 = 666.

It is a super-2 number, since 2×679057398² = 922237899557060808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 12575137 = 679057398 / (6 + 7 + 9 + 0 + 5 + 7 + 3 + 9 + 8).

It is a congruent number.

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, 6287515 + ... + 6287622.

It is an arithmetic number, because the mean of its divisors is an integer number (94313535).

Almost surely, 2^679057398 is an apocalyptic number.

679057398 is an abundant number, since it is smaller than the sum of its proper divisors (829959162).

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

679057398 is a wasteful number, since it uses less digits than its factorization.

679057398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12575148 (or 12575142 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 679057398 is about 26058.7297848533. The cubic root of 679057398 is about 878.9594268917.

The spelling of 679057398 in words is "six hundred seventy-nine million, fifty-seven thousand, three hundred ninety-eight".