801895865 has 32 divisors (see below), whose sum is σ = 1042554240. Its totient is φ = 589906944.

The previous prime is 801895859. The next prime is 801895873. The reversal of 801895865 is 568598108.

It is a cyclic number.

It is not a de Polignac number, because 801895865 - 2²² = 797701561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791099 + ... + 792111.

It is an arithmetic number, because the mean of its divisors is an integer number (32579820).

Almost surely, 2^801895865 is an apocalyptic number.

801895865 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

801895865 is a deficient number, since it is larger than the sum of its proper divisors (240658375).

801895865 is a wasteful number, since it uses less digits than its factorization.

801895865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241.

The product of its (nonzero) digits is 691200, while the sum is 50.

The square root of 801895865 is about 28317.7658899850. The cubic root of 801895865 is about 929.0505070212.

The spelling of 801895865 in words is "eight hundred one million, eight hundred ninety-five thousand, eight hundred sixty-five".