679134678 has 16 divisors (see below), whose sum is σ = 1387169280. Its totient is φ = 221561576.

The previous prime is 679134641. The next prime is 679134691. The reversal of 679134678 is 876431976.

It is a super-2 number, since 2×679134678² = 922447821724327368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679134678.

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, 1203858 + ... + 1204421.

It is an arithmetic number, because the mean of its divisors is an integer number (86698080).

Almost surely, 2^679134678 is an apocalyptic number.

679134678 is an abundant number, since it is smaller than the sum of its proper divisors (708034602).

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

679134678 is a wasteful number, since it uses less digits than its factorization.

679134678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408331.

The product of its digits is 1524096, while the sum is 51.

The square root of 679134678 is about 26060.2125470995. The cubic root of 679134678 is about 878.9927688979.

The spelling of 679134678 in words is "six hundred seventy-nine million, one hundred thirty-four thousand, six hundred seventy-eight".