8620664 has 16 divisors (see below), whose sum is σ = 17407320. Its totient is φ = 3978720.

The previous prime is 8620663. The next prime is 8620673. The reversal of 8620664 is 4660268.

It is a happy number.

8620664 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 8620664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8620663) 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, 41342 + ... + 41549.

Almost surely, 2^8620664 is an apocalyptic number.

It is an amenable number.

8620664 is an abundant number, since it is smaller than the sum of its proper divisors (8786656).

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

8620664 is a wasteful number, since it uses less digits than its factorization.

8620664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82910 (or 82906 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 8620664 is about 2936.0967286518. The cubic root of 8620664 is about 205.0439247539.

The spelling of 8620664 in words is "eight million, six hundred twenty thousand, six hundred sixty-four".