802811 has 2 divisors, whose sum is σ = 802812. Its totient is φ = 802810.

The previous prime is 802799. The next prime is 802829. The reversal of 802811 is 118208.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-802811 is a prime.

It is not a weakly prime, because it can be changed into another prime (802831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401405 + 401406.

It is an arithmetic number, because the mean of its divisors is an integer number (401406).

2⁸⁰²⁸¹¹ is an apocalyptic number.

802811 is a deficient number, since it is larger than the sum of its proper divisors (1).

802811 is an equidigital number, since it uses as much as digits as its factorization.

802811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 802811 is about 895.9972098171. The cubic root of 802811 is about 92.9403787896.

The spelling of 802811 in words is "eight hundred two thousand, eight hundred eleven".