89507565 has 64 divisors (see below), whose sum is σ = 185664000. Its totient is φ = 40896576.

The previous prime is 89507549. The next prime is 89507597. The reversal of 89507565 is 56570598.

89507565 is a `hidden beast` number, since 89 + 5 + 0 + 7 + 565 = 666.

It is not a de Polignac number, because 89507565 - 2⁴ = 89507549 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 89507565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45339 + ... + 47271.

It is an arithmetic number, because the mean of its divisors is an integer number (2901000).

Almost surely, 2^89507565 is an apocalyptic number.

It is an amenable number.

89507565 is an abundant number, since it is smaller than the sum of its proper divisors (96156435).

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

89507565 is a wasteful number, since it uses less digits than its factorization.

89507565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1948 counting only the distinct ones).

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

The square root of 89507565 is about 9460.8437784375. The cubic root of 89507565 is about 447.3216458920.

The spelling of 89507565 in words is "eighty-nine million, five hundred seven thousand, five hundred sixty-five".