87017865 has 16 divisors (see below), whose sum is σ = 151886016. Its totient is φ = 42190400.

The previous prime is 87017851. The next prime is 87017897. The reversal of 87017865 is 56871078.

It is not a de Polignac number, because 87017865 - 2⁷ = 87017737 is a prime.

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, 263526 + ... + 263855.

It is an arithmetic number, because the mean of its divisors is an integer number (9492876).

Almost surely, 2^87017865 is an apocalyptic number.

It is an amenable number.

87017865 is a deficient number, since it is larger than the sum of its proper divisors (64868151).

87017865 is a wasteful number, since it uses less digits than its factorization.

87017865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527400.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 87017865 is about 9328.3366684527. The cubic root of 87017865 is about 443.1350898506.

The spelling of 87017865 in words is "eighty-seven million, seventeen thousand, eight hundred sixty-five".