811116 has 18 divisors (see below), whose sum is σ = 2050412. Its totient is φ = 270360.

The previous prime is 811099. The next prime is 811123. The reversal of 811116 is 611118.

811116 is nontrivially palindromic in base 16.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 811116.

It is an unprimeable number.

811116 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11230 + ... + 11301.

2⁸¹¹¹¹⁶ is an apocalyptic number.

It is an amenable number.

811116 is an abundant number, since it is smaller than the sum of its proper divisors (1239296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811116 is a wasteful number, since it uses less digits than its factorization.

811116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22541 (or 22536 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 811116 is about 900.6197865914. The cubic root of 811116 is about 93.2597662914.

The spelling of 811116 in words is "eight hundred eleven thousand, one hundred sixteen".