667374317 has 4 divisors (see below), whose sum is σ = 667656060. Its totient is φ = 667092576.

The previous prime is 667374307. The next prime is 667374329. The reversal of 667374317 is 713473766.

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

It can be written as a sum of positive squares in 2 ways, for example, as 237807241 + 429567076 = 15421^2 + 20726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667374317 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 (667374307) 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, 137288 + ... + 142065.

It is an arithmetic number, because the mean of its divisors is an integer number (166914015).

Almost surely, 2^667374317 is an apocalyptic number.

It is an amenable number.

667374317 is a deficient number, since it is larger than the sum of its proper divisors (281743).

667374317 is a wasteful number, since it uses less digits than its factorization.

667374317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281742.

The product of its digits is 444528, while the sum is 44.

The square root of 667374317 is about 25833.5889299184. The cubic root of 667374317 is about 873.8894501888.

The spelling of 667374317 in words is "six hundred sixty-seven million, three hundred seventy-four thousand, three hundred seventeen".