810073861 has 8 divisors (see below), whose sum is σ = 840590784. Its totient is φ = 780087840.

The previous prime is 810073841. The next prime is 810073867. The reversal of 810073861 is 168370018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 810073861 - 2¹⁷ = 809942789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810073867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129616 + ... + 135721.

It is an arithmetic number, because the mean of its divisors is an integer number (105073848).

Almost surely, 2^810073861 is an apocalyptic number.

It is an amenable number.

810073861 is a deficient number, since it is larger than the sum of its proper divisors (30516923).

810073861 is a wasteful number, since it uses less digits than its factorization.

810073861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265451.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 810073861 is about 28461.7965174372. The cubic root of 810073861 is about 932.1980846657.

The spelling of 810073861 in words is "eight hundred ten million, seventy-three thousand, eight hundred sixty-one".