809088065 has 16 divisors (see below), whose sum is σ = 1029319680. Its totient is φ = 609456960.

The previous prime is 809088061. The next prime is 809088083. The reversal of 809088065 is 560880908.

It is not a de Polignac number, because 809088065 - 2² = 809088061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (809088061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64805 + ... + 76274.

It is an arithmetic number, because the mean of its divisors is an integer number (64332480).

Almost surely, 2^809088065 is an apocalyptic number.

It is an amenable number.

809088065 is a deficient number, since it is larger than the sum of its proper divisors (220231615).

809088065 is a wasteful number, since it uses less digits than its factorization.

809088065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141152.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 809088065 is about 28444.4733647856. The cubic root of 809088065 is about 931.8197939914.

The spelling of 809088065 in words is "eight hundred nine million, eighty-eight thousand, sixty-five".