8668520 has 64 divisors (see below), whose sum is σ = 22619520. Its totient is φ = 2928384.

The previous prime is 8668519. The next prime is 8668523. The reversal of 8668520 is 258668.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (8668523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23054 + ... + 23426.

It is an arithmetic number, because the mean of its divisors is an integer number (353430).

Almost surely, 2^8668520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8668520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11309760).

8668520 is an abundant number, since it is smaller than the sum of its proper divisors (13951000).

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

8668520 is a wasteful number, since it uses less digits than its factorization.

8668520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 8668520 is about 2944.2350449650. The cubic root of 8668520 is about 205.4226457853.

The spelling of 8668520 in words is "eight million, six hundred sixty-eight thousand, five hundred twenty".