826811 has 2 divisors, whose sum is σ = 826812. Its totient is φ = 826810.

The previous prime is 826807. The next prime is 826831. The reversal of 826811 is 118628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 826811 - 2² = 826807 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 826811.

It is not a weakly prime, because it can be changed into another prime (826831) 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 as a sum of consecutive naturals, namely, 413405 + 413406.

It is an arithmetic number, because the mean of its divisors is an integer number (413406).

2⁸²⁶⁸¹¹ is an apocalyptic number.

826811 is a deficient number, since it is larger than the sum of its proper divisors (1).

826811 is an equidigital number, since it uses as much as digits as its factorization.

826811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 26.

The square root of 826811 is about 909.2914824191. The cubic root of 826811 is about 93.8574495427.

The spelling of 826811 in words is "eight hundred twenty-six thousand, eight hundred eleven".