8000865 has 12 divisors (see below), whose sum is σ = 13868244. Its totient is φ = 4267104.

The previous prime is 8000831. The next prime is 8000869. The reversal of 8000865 is 5680008.

It can be written as a sum of positive squares in 2 ways, for example, as 1830609 + 6170256 = 1353^2 + 2484^2 .

It is not a de Polignac number, because 8000865 - 2⁶ = 8000801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8000869) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 88854 + ... + 88943.

It is an arithmetic number, because the mean of its divisors is an integer number (1155687).

Almost surely, 2^8000865 is an apocalyptic number.

It is an amenable number.

8000865 is a deficient number, since it is larger than the sum of its proper divisors (5867379).

8000865 is a wasteful number, since it uses less digits than its factorization.

8000865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177808 (or 177805 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 8000865 is about 2828.5800324544. The cubic root of 8000865 is about 200.0072080735.

The spelling of 8000865 in words is "eight million, eight hundred sixty-five", and thus it is an aban number.