87102085 has 16 divisors (see below), whose sum is σ = 120252672. Its totient is φ = 59328000.

The previous prime is 87102073. The next prime is 87102091. The reversal of 87102085 is 58020178.

It is not a de Polignac number, because 87102085 - 2⁷ = 87101957 is a prime.

It is a super-2 number, since 2×87102085² = 15173546422694450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2956 + ... + 13525.

It is an arithmetic number, because the mean of its divisors is an integer number (7515792).

Almost surely, 2^87102085 is an apocalyptic number.

It is an amenable number.

87102085 is a deficient number, since it is larger than the sum of its proper divisors (33150587).

87102085 is a wasteful number, since it uses less digits than its factorization.

87102085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16644.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 87102085 is about 9332.8497791403. The cubic root of 87102085 is about 443.2780061105.

The spelling of 87102085 in words is "eighty-seven million, one hundred two thousand, eighty-five".