667322979 has 8 divisors (see below), whose sum is σ = 899761680. Its totient is φ = 439883136.

The previous prime is 667322939. The next prime is 667322983. The reversal of 667322979 is 979223766.

667322979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667322979 - 2¹⁶ = 667257443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667322939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1249402 + ... + 1249935.

It is an arithmetic number, because the mean of its divisors is an integer number (112470210).

Almost surely, 2^667322979 is an apocalyptic number.

667322979 is a deficient number, since it is larger than the sum of its proper divisors (232438701).

667322979 is a wasteful number, since it uses less digits than its factorization.

667322979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499429.

The product of its digits is 1714608, while the sum is 51.

The square root of 667322979 is about 25832.5952819302. The cubic root of 667322979 is about 873.8670415315.

The spelling of 667322979 in words is "six hundred sixty-seven million, three hundred twenty-two thousand, nine hundred seventy-nine".