9875565 has 48 divisors (see below), whose sum is σ = 19813248. Its totient is φ = 4457088.

The previous prime is 9875563. The next prime is 9875587. The reversal of 9875565 is 5655789.

9875565 is a `hidden beast` number, since 9 + 87 + 5 + 565 = 666.

9875565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9875565 - 2¹ = 9875563 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 9875565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9875561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33559 + ... + 33851.

It is an arithmetic number, because the mean of its divisors is an integer number (412776).

Almost surely, 2^9875565 is an apocalyptic number.

It is an amenable number.

9875565 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

9875565 is a wasteful number, since it uses less digits than its factorization.

9875565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 415 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 9875565 is about 3142.5411691814. The cubic root of 9875565 is about 214.5461129608.

It can be divided in two parts, 9875 and 565, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 9875565 in words is "nine million, eight hundred seventy-five thousand, five hundred sixty-five".