679138912 has 12 divisors (see below), whose sum is σ = 1337054796. Its totient is φ = 339569440.

The previous prime is 679138903. The next prime is 679138919. The reversal of 679138912 is 219831976.

It is a happy number.

It is a super-2 number, since 2×679138912² = 922459323585087488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679138919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611514 + ... + 10611577.

It is an arithmetic number, because the mean of its divisors is an integer number (111421233).

Almost surely, 2^679138912 is an apocalyptic number.

It is an amenable number.

679138912 is a deficient number, since it is larger than the sum of its proper divisors (657915884).

679138912 is a wasteful number, since it uses less digits than its factorization.

679138912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223101 (or 21223093 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 679138912 is about 26060.2937819204. The cubic root of 679138912 is about 878.9945955595.

The spelling of 679138912 in words is "six hundred seventy-nine million, one hundred thirty-eight thousand, nine hundred twelve".