87082865 has 16 divisors (see below), whose sum is σ = 105779520. Its totient is φ = 68819520.

The previous prime is 87082819. The next prime is 87082873. The reversal of 87082865 is 56828078.

It is not a de Polignac number, because 87082865 - 2⁸ = 87082609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207626 + ... + 208044.

It is an arithmetic number, because the mean of its divisors is an integer number (6611220).

Almost surely, 2^87082865 is an apocalyptic number.

It is an amenable number.

87082865 is a deficient number, since it is larger than the sum of its proper divisors (18696655).

87082865 is a wasteful number, since it uses less digits than its factorization.

87082865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 87082865 is about 9331.8200261257. The cubic root of 87082865 is about 443.2453990456.

The spelling of 87082865 in words is "eighty-seven million, eighty-two thousand, eight hundred sixty-five".