8747865 has 32 divisors (see below), whose sum is σ = 17775360. Its totient is φ = 3998592.

The previous prime is 8747863. The next prime is 8747891. The reversal of 8747865 is 5687478.

It is not a de Polignac number, because 8747865 - 2¹ = 8747863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8747865.

It is not an unprimeable number, because it can be changed into a prime (8747863) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3684 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (555480).

Almost surely, 2^8747865 is an apocalyptic number.

It is an amenable number.

8747865 is an abundant number, since it is smaller than the sum of its proper divisors (9027495).

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

8747865 is a wasteful number, since it uses less digits than its factorization.

8747865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278 (or 9272 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 8747865 is about 2957.6789886666. The cubic root of 8747865 is about 206.0475037336.

The spelling of 8747865 in words is "eight million, seven hundred forty-seven thousand, eight hundred sixty-five".