810326985 has 16 divisors (see below), whose sum is σ = 1396256064. Its totient is φ = 398930112.

The previous prime is 810326971. The next prime is 810326987. The reversal of 810326985 is 589623018.

It is not a de Polignac number, because 810326985 - 2⁶ = 810326921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (810326987) 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, 2077567 + ... + 2077956.

It is an arithmetic number, because the mean of its divisors is an integer number (87266004).

Almost surely, 2^810326985 is an apocalyptic number.

It is an amenable number.

810326985 is a deficient number, since it is larger than the sum of its proper divisors (585929079).

810326985 is a wasteful number, since it uses less digits than its factorization.

810326985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155544.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 810326985 is about 28466.2429027787. The cubic root of 810326985 is about 932.2951692842.

The spelling of 810326985 in words is "eight hundred ten million, three hundred twenty-six thousand, nine hundred eighty-five".