679239361 has 4 divisors (see below), whose sum is σ = 692055252. Its totient is φ = 666423472.

The previous prime is 679239359. The next prime is 679239373. The reversal of 679239361 is 163932976.

679239361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 549621136 + 129618225 = 23444^2 + 11385^2 .

It is a cyclic number.

It is not a de Polignac number, because 679239361 - 2¹ = 679239359 is a prime.

It is a super-2 number, since 2×679239361² = 922732219063376642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679233361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6407866 + ... + 6407971.

It is an arithmetic number, because the mean of its divisors is an integer number (173013813).

Almost surely, 2^679239361 is an apocalyptic number.

It is an amenable number.

679239361 is a deficient number, since it is larger than the sum of its proper divisors (12815891).

679239361 is a wasteful number, since it uses less digits than its factorization.

679239361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12815890.

The product of its digits is 367416, while the sum is 46.

The square root of 679239361 is about 26062.2209529426. The cubic root of 679239361 is about 879.0379297355.

It can be divided in two parts, 67923 and 9361, that added together give a square (77284 = 278²).

The spelling of 679239361 in words is "six hundred seventy-nine million, two hundred thirty-nine thousand, three hundred sixty-one".