855697 has 2 divisors, whose sum is σ = 855698. Its totient is φ = 855696.

The previous prime is 855683. The next prime is 855709. The reversal of 855697 is 796558.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839056 + 16641 = 916^2 + 129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855697 is a prime.

It is not a weakly prime, because it can be changed into another prime (855607) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427848 + 427849.

It is an arithmetic number, because the mean of its divisors is an integer number (427849).

2⁸⁵⁵⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

855697 is a deficient number, since it is larger than the sum of its proper divisors (1).

855697 is an equidigital number, since it uses as much as digits as its factorization.

855697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 855697 is about 925.0389181002. The cubic root of 855697 is about 94.9379835315.

The spelling of 855697 in words is "eight hundred fifty-five thousand, six hundred ninety-seven".