383664657 has 8 divisors (see below), whose sum is σ = 516334176. Its totient is φ = 253385792.

The previous prime is 383664643. The next prime is 383664703. The reversal of 383664657 is 756466383.

It is a happy number.

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 383664657 - 2⁴ = 383664641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (383665657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597288 + ... + 597929.

It is an arithmetic number, because the mean of its divisors is an integer number (64541772).

Almost surely, 2^383664657 is an apocalyptic number.

It is an amenable number.

383664657 is a deficient number, since it is larger than the sum of its proper divisors (132669519).

383664657 is a wasteful number, since it uses less digits than its factorization.

383664657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195327.

The product of its digits is 2177280, while the sum is 48.

The square root of 383664657 is about 19587.3596229813. The cubic root of 383664657 is about 726.6365926401.

The spelling of 383664657 in words is "three hundred eighty-three million, six hundred sixty-four thousand, six hundred fifty-seven".