8687664 has 30 divisors (see below), whose sum is σ = 24313796. Its totient is φ = 2895840.

The previous prime is 8687659. The next prime is 8687669. The reversal of 8687664 is 4667868.

It is a happy number.

8687664 is nontrivially palindromic in base 5.

It is an interprime number because it is at equal distance from previous prime (8687659) and next prime (8687669).

It is not an unprimeable number, because it can be changed into a prime (8687669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30022 + ... + 30309.

Almost surely, 2^8687664 is an apocalyptic number.

It is an amenable number.

8687664 is an abundant number, since it is smaller than the sum of its proper divisors (15626132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8687664 is a wasteful number, since it uses less digits than its factorization.

8687664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60345 (or 60336 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 8687664 is about 2947.4843511035. The cubic root of 8687664 is about 205.5737565357.

The spelling of 8687664 in words is "eight million, six hundred eighty-seven thousand, six hundred sixty-four".