679710138 has 16 divisors (see below), whose sum is σ = 1360650720. Its totient is φ = 226364976.

The previous prime is 679710089. The next prime is 679710169. The reversal of 679710138 is 831017976.

It is a self number, because there is not a number n which added to its sum of digits gives 679710138.

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, 44008 + ... + 57411.

It is an arithmetic number, because the mean of its divisors is an integer number (85040670).

Almost surely, 2^679710138 is an apocalyptic number.

679710138 is an abundant number, since it is smaller than the sum of its proper divisors (680940582).

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

679710138 is a wasteful number, since it uses less digits than its factorization.

679710138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102541.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 679710138 is about 26071.2511782615. The cubic root of 679710138 is about 879.2409682577.

The spelling of 679710138 in words is "six hundred seventy-nine million, seven hundred ten thousand, one hundred thirty-eight".