8664904687 has 4 divisors (see below), whose sum is σ = 8668117800. Its totient is φ = 8661691576.

The previous prime is 8664904679. The next prime is 8664904697. The reversal of 8664904687 is 7864094668.

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

It is a cyclic number.

It is not a de Polignac number, because 8664904687 - 2³ = 8664904679 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 (8664904657) 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, 1602508 + ... + 1607905.

It is an arithmetic number, because the mean of its divisors is an integer number (2167029450).

Almost surely, 2^8664904687 is an apocalyptic number.

8664904687 is a deficient number, since it is larger than the sum of its proper divisors (3213113).

8664904687 is a wasteful number, since it uses less digits than its factorization.

8664904687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213112.

The product of its (nonzero) digits is 13934592, while the sum is 58.

The square root of 8664904687 is about 93085.4697952371. The cubic root of 8664904687 is about 2053.9408379966.

The spelling of 8664904687 in words is "eight billion, six hundred sixty-four million, nine hundred four thousand, six hundred eighty-seven".