8645560 has 96 divisors (see below), whose sum is σ = 24747120. Its totient is φ = 2688000.

The previous prime is 8645543. The next prime is 8645579. The reversal of 8645560 is 655468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21360 + ... + 21760.

Almost surely, 2^8645560 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 8645560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12373560).

8645560 is an abundant number, since it is smaller than the sum of its proper divisors (16101560).

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

8645560 is a wasteful number, since it uses less digits than its factorization.

8645560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 8645560 is about 2940.3333144390. Note that the first 4 decimals coincide. The cubic root of 8645560 is about 205.2411202104.

The spelling of 8645560 in words is "eight million, six hundred forty-five thousand, five hundred sixty".