810011 has 4 divisors (see below), whose sum is σ = 823800. Its totient is φ = 796224.

The previous prime is 809993. The next prime is 810013. The reversal of 810011 is 110018.

810011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110018 = 2 ⋅55009.

It is a cyclic number.

It is not a de Polignac number, because 810011 - 2¹⁴ = 793627 is a prime.

It is a super-2 number, since 2×810011² = 1312235640242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 809974 and 810001.

It is not an unprimeable number, because it can be changed into a prime (810013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6806 + ... + 6923.

It is an arithmetic number, because the mean of its divisors is an integer number (205950).

2⁸¹⁰⁰¹¹ is an apocalyptic number.

810011 is a deficient number, since it is larger than the sum of its proper divisors (13789).

810011 is a wasteful number, since it uses less digits than its factorization.

810011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13788.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 810011 is about 900.0061110904. The cubic root of 810011 is about 93.2173971466.

Subtracting from 810011 its sum of digits (11), we obtain a 4-th power (810000 = 30⁴).

Adding to 810011 its reverse (110018), we get a palindrome (920029).

The spelling of 810011 in words is "eight hundred ten thousand, eleven".