667407317 has 8 divisors (see below), whose sum is σ = 674915136. Its totient is φ = 659941632.

The previous prime is 667407287. The next prime is 667407329. The reversal of 667407317 is 713704766.

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

It is a cyclic number.

It is not a de Polignac number, because 667407317 - 2⁶ = 667407253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667407337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21878 + ... + 42584.

It is an arithmetic number, because the mean of its divisors is an integer number (84364392).

Almost surely, 2^667407317 is an apocalyptic number.

It is an amenable number.

667407317 is a deficient number, since it is larger than the sum of its proper divisors (7507819).

667407317 is a wasteful number, since it uses less digits than its factorization.

667407317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21067.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 667407317 is about 25834.2276253810. The cubic root of 667407317 is about 873.9038538379.

The spelling of 667407317 in words is "six hundred sixty-seven million, four hundred seven thousand, three hundred seventeen".