8659920 has 40 divisors (see below), whose sum is σ = 26846496. Its totient is φ = 2309248.

The previous prime is 8659913. The next prime is 8659921. The reversal of 8659920 is 299568.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8659921) 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, 17802 + ... + 18281.

Almost surely, 2^8659920 is an apocalyptic number.

8659920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8659920 is an abundant number, since it is smaller than the sum of its proper divisors (18186576).

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

8659920 is a wasteful number, since it uses less digits than its factorization.

8659920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36099 (or 36093 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 8659920 is about 2942.7742013277. The cubic root of 8659920 is about 205.3546903443.

It can be divided in two parts, 86 and 59920, that added together give a palindrome (60006).

The spelling of 8659920 in words is "eight million, six hundred fifty-nine thousand, nine hundred twenty".