804997 has 2 divisors, whose sum is σ = 804998. Its totient is φ = 804996.

The previous prime is 804989. The next prime is 805019. The reversal of 804997 is 799408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519841 + 285156 = 721^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 804997 - 2³ = 804989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402498 + 402499.

It is an arithmetic number, because the mean of its divisors is an integer number (402499).

2⁸⁰⁴⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

804997 is a deficient number, since it is larger than the sum of its proper divisors (1).

804997 is an equidigital number, since it uses as much as digits as its factorization.

804997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 804997 is about 897.2162504101. The cubic root of 804997 is about 93.0246591256.

The spelling of 804997 in words is "eight hundred four thousand, nine hundred ninety-seven".