87615563 has 8 divisors (see below), whose sum is σ = 100193280. Its totient is φ = 75053160.

The previous prime is 87615529. The next prime is 87615587. The reversal of 87615563 is 36551678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87615563 - 2¹⁴ = 87599179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87615563.

It is not an unprimeable number, because it can be changed into a prime (87615523) 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 7 ways as a sum of consecutive naturals, for example, 13958 + ... + 19236.

It is an arithmetic number, because the mean of its divisors is an integer number (12524160).

Almost surely, 2^87615563 is an apocalyptic number.

87615563 is a deficient number, since it is larger than the sum of its proper divisors (12577717).

87615563 is a wasteful number, since it uses less digits than its factorization.

87615563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7657.

The product of its digits is 151200, while the sum is 41.

The square root of 87615563 is about 9360.3185309048. The cubic root of 87615563 is about 444.1473603203.

The spelling of 87615563 in words is "eighty-seven million, six hundred fifteen thousand, five hundred sixty-three".