810026805 has 16 divisors (see below), whose sum is σ = 1481192064. Its totient is φ = 370297920.

The previous prime is 810026771. The next prime is 810026831. The reversal of 810026805 is 508620018.

It is not a de Polignac number, because 810026805 - 2⁶ = 810026741 is a prime.

It is a super-2 number, since 2×810026805² = 1312286849637016050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3857166 + ... + 3857375.

It is an arithmetic number, because the mean of its divisors is an integer number (92574504).

Almost surely, 2^810026805 is an apocalyptic number.

It is an amenable number.

810026805 is a deficient number, since it is larger than the sum of its proper divisors (671165259).

810026805 is a wasteful number, since it uses less digits than its factorization.

810026805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714556.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 810026805 is about 28460.9698534677. The cubic root of 810026805 is about 932.1800343107.

The spelling of 810026805 in words is "eight hundred ten million, twenty-six thousand, eight hundred five".