87205568 has 28 divisors (see below), whose sum is σ = 174741840. Its totient is φ = 43176192.

The previous prime is 87205561. The next prime is 87205579. The reversal of 87205568 is 86550278.

It is a super-2 number, since 2×87205568² = 15209622180405248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87205561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 13206.

It is an arithmetic number, because the mean of its divisors is an integer number (6240780).

Almost surely, 2^87205568 is an apocalyptic number.

It is an amenable number.

87205568 is an abundant number, since it is smaller than the sum of its proper divisors (87536272).

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

87205568 is a wasteful number, since it uses less digits than its factorization.

87205568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13344 (or 13334 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 87205568 is about 9338.3921528280. The cubic root of 87205568 is about 443.4534844345.

The spelling of 87205568 in words is "eighty-seven million, two hundred five thousand, five hundred sixty-eight".