679668398 has 32 divisors (see below), whose sum is σ = 1121117760. Its totient is φ = 307722240.

The previous prime is 679668383. The next prime is 679668463. The reversal of 679668398 is 893866976.

It is a self number, because there is not a number n which added to its sum of digits gives 679668398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98423 + ... + 105101.

It is an arithmetic number, because the mean of its divisors is an integer number (35034930).

Almost surely, 2^679668398 is an apocalyptic number.

679668398 is a deficient number, since it is larger than the sum of its proper divisors (441449362).

679668398 is a wasteful number, since it uses less digits than its factorization.

679668398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812.

The product of its digits is 23514624, while the sum is 62.

The square root of 679668398 is about 26070.4506673744. The cubic root of 679668398 is about 879.2229702576. Note that the first 3 decimals are identical.

The spelling of 679668398 in words is "six hundred seventy-nine million, six hundred sixty-eight thousand, three hundred ninety-eight".