679379786 has 4 divisors (see below), whose sum is σ = 1019069682. Its totient is φ = 339689892.

The previous prime is 679379777. The next prime is 679379821. The reversal of 679379786 is 687973976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 501984025 + 177395761 = 22405^2 + 13319^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169844945 + ... + 169844948.

Almost surely, 2^679379786 is an apocalyptic number.

679379786 is a deficient number, since it is larger than the sum of its proper divisors (339689896).

679379786 is a wasteful number, since it uses less digits than its factorization.

679379786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339689895.

The product of its digits is 24004512, while the sum is 62.

The square root of 679379786 is about 26064.9148473575. The cubic root of 679379786 is about 879.0985025874.

The spelling of 679379786 in words is "six hundred seventy-nine million, three hundred seventy-nine thousand, seven hundred eighty-six".