87165858 has 32 divisors (see below), whose sum is σ = 192822336. Its totient is φ = 26094528.

The previous prime is 87165847. The next prime is 87165887. The reversal of 87165858 is 85856178.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12216 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (6025698).

Almost surely, 2^87165858 is an apocalyptic number.

87165858 is an abundant number, since it is smaller than the sum of its proper divisors (105656478).

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

87165858 is a wasteful number, since it uses less digits than its factorization.

87165858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30258.

The product of its digits is 537600, while the sum is 48.

The square root of 87165858 is about 9336.2657417192. The cubic root of 87165858 is about 443.3861637659.

The spelling of 87165858 in words is "eighty-seven million, one hundred sixty-five thousand, eight hundred fifty-eight".