865086522 has 16 divisors (see below), whose sum is σ = 1730481600. Its totient is φ = 288310752.

The previous prime is 865086503. The next prime is 865086533. The reversal of 865086522 is 225680568.

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 7 ways as a sum of consecutive naturals, for example, 40854 + ... + 58302.

It is an arithmetic number, because the mean of its divisors is an integer number (108155100).

Almost surely, 2^865086522 is an apocalyptic number.

865086522 is an abundant number, since it is smaller than the sum of its proper divisors (865395078).

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

865086522 is a wasteful number, since it uses less digits than its factorization.

865086522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25717.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 865086522 is about 29412.3532210532. The cubic root of 865086522 is about 952.8397107380.

The spelling of 865086522 in words is "eight hundred sixty-five million, eighty-six thousand, five hundred twenty-two".