679702213 has 4 divisors (see below), whose sum is σ = 679906048. Its totient is φ = 679498380.

The previous prime is 679702193. The next prime is 679702217. The reversal of 679702213 is 312207976.

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 a de Polignac number, because none of the positive numbers 2^k-679702213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679702217) 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, 96831 + ... + 103612.

It is an arithmetic number, because the mean of its divisors is an integer number (169976512).

Almost surely, 2^679702213 is an apocalyptic number.

It is an amenable number.

679702213 is a deficient number, since it is larger than the sum of its proper divisors (203835).

679702213 is a wasteful number, since it uses less digits than its factorization.

679702213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203834.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 679702213 is about 26071.0991904829. The cubic root of 679702213 is about 879.2375511090.

The spelling of 679702213 in words is "six hundred seventy-nine million, seven hundred two thousand, two hundred thirteen".