811697 has 2 divisors, whose sum is σ = 811698. Its totient is φ = 811696.

The previous prime is 811691. The next prime is 811703. The reversal of 811697 is 796118.

It is a balanced prime because it is at equal distance from previous prime (811691) and next prime (811703).

It can be written as a sum of positive squares in only one way, i.e., 732736 + 78961 = 856^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 811697 - 2⁸ = 811441 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 811697.

It is not a weakly prime, because it can be changed into another prime (811691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405848 + 405849.

It is an arithmetic number, because the mean of its divisors is an integer number (405849).

2⁸¹¹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

811697 is a deficient number, since it is larger than the sum of its proper divisors (1).

811697 is an equidigital number, since it uses as much as digits as its factorization.

811697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 811697 is about 900.9422845000. The cubic root of 811697 is about 93.2820282088.

The spelling of 811697 in words is "eight hundred eleven thousand, six hundred ninety-seven".