679312013 has 4 divisors (see below), whose sum is σ = 681496608. Its totient is φ = 677127420.

The previous prime is 679311973. The next prime is 679312031. The reversal of 679312013 is 310213976.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 679312013 - 2⁶ = 679311949 is a prime.

It is a super-2 number, since 2×679312013² = 922929622012224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679312033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091831 + ... + 1092452.

It is an arithmetic number, because the mean of its divisors is an integer number (170374152).

Almost surely, 2^679312013 is an apocalyptic number.

It is an amenable number.

679312013 is a deficient number, since it is larger than the sum of its proper divisors (2184595).

679312013 is a wasteful number, since it uses less digits than its factorization.

679312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184594.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 679312013 is about 26063.6147339543. The cubic root of 679312013 is about 879.0692694911.

Adding to 679312013 its reverse (310213976), we get a palindrome (989525989).

The spelling of 679312013 in words is "six hundred seventy-nine million, three hundred twelve thousand, thirteen".