865032012 has 72 divisors (see below), whose sum is σ = 2493350496. Its totient is φ = 250504704.

The previous prime is 865031953. The next prime is 865032013. The reversal of 865032012 is 210230568.

865032012 is a `hidden beast` number, since 8 + 650 + 3 + 2 + 0 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (865032013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46408 + ... + 62319.

It is an arithmetic number, because the mean of its divisors is an integer number (34629868).

Almost surely, 2^865032012 is an apocalyptic number.

It is an amenable number.

865032012 is an abundant number, since it is smaller than the sum of its proper divisors (1628318484).

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

865032012 is a wasteful number, since it uses less digits than its factorization.

865032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108767 (or 108762 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 865032012 is about 29411.4265549973. The cubic root of 865032012 is about 952.8196971778.

The spelling of 865032012 in words is "eight hundred sixty-five million, thirty-two thousand, twelve".