679213 has 4 divisors (see below), whose sum is σ = 708768. Its totient is φ = 649660.

The previous prime is 679207. The next prime is 679219. The reversal of 679213 is 312976.

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 an interprime number because it is at equal distance from previous prime (679207) and next prime (679219).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679213 is a prime.

It is a super-2 number, since 2×679213² = 922660598738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14743 + ... + 14788.

It is an arithmetic number, because the mean of its divisors is an integer number (177192).

2⁶⁷⁹²¹³ is an apocalyptic number.

It is an amenable number.

679213 is a deficient number, since it is larger than the sum of its proper divisors (29555).

679213 is a wasteful number, since it uses less digits than its factorization.

679213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29554.

The product of its digits is 2268, while the sum is 28.

The square root of 679213 is about 824.1437981323. The cubic root of 679213 is about 87.9026557888.

The spelling of 679213 in words is "six hundred seventy-nine thousand, two hundred thirteen".