873811 has 4 divisors (see below), whose sum is σ = 890352. Its totient is φ = 857272.

The previous prime is 873787. The next prime is 873863. The reversal of 873811 is 118378.

It is a happy number.

873811 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 873811 - 2¹¹ = 871763 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 873811.

It is not an unprimeable number, because it can be changed into a prime (870811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8191 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (222588).

2⁸⁷³⁸¹¹ is an apocalyptic number.

873811 is a deficient number, since it is larger than the sum of its proper divisors (16541).

873811 is a wasteful number, since it uses less digits than its factorization.

873811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16540.

The product of its digits is 1344, while the sum is 28.

The square root of 873811 is about 934.7785834089. The cubic root of 873811 is about 95.6032161637.

The spelling of 873811 in words is "eight hundred seventy-three thousand, eight hundred eleven".