204797 has 2 divisors, whose sum is σ = 204798. Its totient is φ = 204796.

The previous prime is 204793. The next prime is 204803. The reversal of 204797 is 797402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177241 + 27556 = 421^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 204797 - 2² = 204793 is a prime.

It is a super-2 number, since 2×204797² = 83883622418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102398 + 102399.

It is an arithmetic number, because the mean of its divisors is an integer number (102399).

2²⁰⁴⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

204797 is a deficient number, since it is larger than the sum of its proper divisors (1).

204797 is an equidigital number, since it uses as much as digits as its factorization.

204797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 204797 is about 452.5450253842. The cubic root of 204797 is about 58.9442161619.

It can be divided in two parts, 204 and 797, that added together give a palindrome (1001).

The spelling of 204797 in words is "two hundred four thousand, seven hundred ninety-seven".