87085089 has 24 divisors (see below), whose sum is σ = 154819392. Its totient is φ = 45934560.

The previous prime is 87085081. The next prime is 87085099. The reversal of 87085089 is 98058078.

It is not a de Polignac number, because 87085089 - 2³ = 87085081 is a prime.

It is a super-2 number, since 2×87085089² = 15167625452275842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87085081) 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, 52347 + ... + 53984.

It is an arithmetic number, because the mean of its divisors is an integer number (6450808).

Almost surely, 2^87085089 is an apocalyptic number.

It is an amenable number.

87085089 is a deficient number, since it is larger than the sum of its proper divisors (67734303).

87085089 is a wasteful number, since it uses less digits than its factorization.

87085089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106357 (or 106354 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 87085089 is about 9331.9391875430. The cubic root of 87085089 is about 443.2491723458.

The spelling of 87085089 in words is "eighty-seven million, eighty-five thousand, eighty-nine".