667317 has 16 divisors (see below), whose sum is σ = 1041920. Its totient is φ = 371952.

The previous prime is 667309. The next prime is 667321. The reversal of 667317 is 713766.

It is not a de Polignac number, because 667317 - 2³ = 667309 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 (667367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534 + ... + 1272.

It is an arithmetic number, because the mean of its divisors is an integer number (65120).

2⁶⁶⁷³¹⁷ is an apocalyptic number.

It is an amenable number.

667317 is a deficient number, since it is larger than the sum of its proper divisors (374603).

667317 is a wasteful number, since it uses less digits than its factorization.

667317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 5292, while the sum is 30.

The square root of 667317 is about 816.8947300601. The cubic root of 667317 is about 87.3864431668.

The spelling of 667317 in words is "six hundred sixty-seven thousand, three hundred seventeen".