679811398 has 12 divisors (see below), whose sum is σ = 1186201692. Its totient is φ = 291347700.

The previous prime is 679811383. The next prime is 679811401. The reversal of 679811398 is 893118976.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3468328 + ... + 3468523.

It is an arithmetic number, because the mean of its divisors is an integer number (98850141).

Almost surely, 2^679811398 is an apocalyptic number.

679811398 is a deficient number, since it is larger than the sum of its proper divisors (506390294).

679811398 is a wasteful number, since it uses less digits than its factorization.

679811398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6936867 (or 6936860 counting only the distinct ones).

The product of its digits is 653184, while the sum is 52.

The square root of 679811398 is about 26073.1930917561. The cubic root of 679811398 is about 879.2846278093.

The spelling of 679811398 in words is "six hundred seventy-nine million, eight hundred eleven thousand, three hundred ninety-eight".