679213927 has 4 divisors (see below), whose sum is σ = 776244496. Its totient is φ = 582183360.

The previous prime is 679213891. The next prime is 679213949. The reversal of 679213927 is 729312976.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679213927 is a prime.

It is a super-2 number, since 2×679213927² = 922663117261522658, 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 (679213987) 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, 48515274 + ... + 48515287.

It is an arithmetic number, because the mean of its divisors is an integer number (194061124).

Almost surely, 2^679213927 is an apocalyptic number.

679213927 is a deficient number, since it is larger than the sum of its proper divisors (97030569).

679213927 is an equidigital number, since it uses as much as digits as its factorization.

679213927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97030568.

The product of its digits is 285768, while the sum is 46.

The square root of 679213927 is about 26061.7330007043. The cubic root of 679213927 is about 879.0269577909.

The spelling of 679213927 in words is "six hundred seventy-nine million, two hundred thirteen thousand, nine hundred twenty-seven".