87085086 has 64 divisors (see below), whose sum is σ = 198443520. Its totient is φ = 25235840.

The previous prime is 87085081. The next prime is 87085099. The reversal of 87085086 is 68058078.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87085081) 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 31 ways as a sum of consecutive naturals, for example, 330991 + ... + 331253.

It is an arithmetic number, because the mean of its divisors is an integer number (3100680).

Almost surely, 2^87085086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87085086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99221760).

87085086 is an abundant number, since it is smaller than the sum of its proper divisors (111358434).

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

87085086 is a wasteful number, since it uses less digits than its factorization.

87085086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 87085086 is about 9331.9390268047. The cubic root of 87085086 is about 443.2491672560.

The spelling of 87085086 in words is "eighty-seven million, eighty-five thousand, eighty-six".