87615585 has 24 divisors (see below), whose sum is σ = 152565504. Its totient is φ = 46513440.

The previous prime is 87615529. The next prime is 87615587. The reversal of 87615585 is 58551678.

87615585 is a `hidden beast` number, since 8 + 7 + 61 + 5 + 585 = 666.

It is not a de Polignac number, because 87615585 - 2⁷ = 87615457 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 87615585.

It is not an unprimeable number, because it can be changed into a prime (87615587) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5670 + ... + 14400.

It is an arithmetic number, because the mean of its divisors is an integer number (6356896).

Almost surely, 2^87615585 is an apocalyptic number.

It is an amenable number.

87615585 is a deficient number, since it is larger than the sum of its proper divisors (64949919).

87615585 is a wasteful number, since it uses less digits than its factorization.

87615585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8965 (or 8962 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The square root of 87615585 is about 9360.3197060784. The cubic root of 87615585 is about 444.1473974950.

It can be divided in two parts, 876 and 15585, that added together give a palindrome (16461).

The spelling of 87615585 in words is "eighty-seven million, six hundred fifteen thousand, five hundred eighty-five".