8664657 has 8 divisors (see below), whose sum is σ = 11573184. Its totient is φ = 5766288.

The previous prime is 8664613. The next prime is 8664661. The reversal of 8664657 is 7564668.

It is a happy number.

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

It is not a de Polignac number, because 8664657 - 2⁷ = 8664529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8664157) 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, 253 + ... + 4170.

It is an arithmetic number, because the mean of its divisors is an integer number (1446648).

Almost surely, 2^8664657 is an apocalyptic number.

It is an amenable number.

8664657 is a deficient number, since it is larger than the sum of its proper divisors (2908527).

8664657 is a wasteful number, since it uses less digits than its factorization.

8664657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079.

The product of its digits is 241920, while the sum is 42.

The square root of 8664657 is about 2943.5789440747. The cubic root of 8664657 is about 205.3921267122.

The spelling of 8664657 in words is "eight million, six hundred sixty-four thousand, six hundred fifty-seven".