865000801 has 16 divisors (see below), whose sum is σ = 1007657728. Its totient is φ = 727185600.

The previous prime is 865000793. The next prime is 865000819. The reversal of 865000801 is 108000568.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 865000801 - 2³ = 865000793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 865000801.

It is not an unprimeable number, because it can be changed into a prime (865000841) 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 15 ways as a sum of consecutive naturals, for example, 156556 + ... + 161986.

It is an arithmetic number, because the mean of its divisors is an integer number (62978608).

Almost surely, 2^865000801 is an apocalyptic number.

It is an amenable number.

865000801 is a deficient number, since it is larger than the sum of its proper divisors (142656927).

865000801 is a wasteful number, since it uses less digits than its factorization.

865000801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 865000801 is about 29410.8959571109. The cubic root of 865000801 is about 952.8082375582.

The spelling of 865000801 in words is "eight hundred sixty-five million, eight hundred one", and thus it is an aban number.