87564279 has 16 divisors (see below), whose sum is σ = 128136960. Its totient is φ = 52748160.

The previous prime is 87564277. The next prime is 87564313. The reversal of 87564279 is 97246578.

It is not a de Polignac number, because 87564279 - 2¹ = 87564277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87564271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2434 + ... + 13455.

It is an arithmetic number, because the mean of its divisors is an integer number (8008560).

Almost surely, 2^87564279 is an apocalyptic number.

87564279 is a deficient number, since it is larger than the sum of its proper divisors (40572681).

87564279 is a wasteful number, since it uses less digits than its factorization.

87564279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16070.

The product of its digits is 846720, while the sum is 48.

The square root of 87564279 is about 9357.5786932304. The cubic root of 87564279 is about 444.0606858452.

The spelling of 87564279 in words is "eighty-seven million, five hundred sixty-four thousand, two hundred seventy-nine".