204713 has 4 divisors (see below), whose sum is σ = 209748. Its totient is φ = 199680.

The previous prime is 204707. The next prime is 204719. The reversal of 204713 is 317402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (204707) and next prime (204719).

It can be written as a sum of positive squares in 2 ways, for example, as 34969 + 169744 = 187^2 + 412^2 .

It is a cyclic number.

It is not a de Polignac number, because 204713 - 2¹⁶ = 139177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204691 and 204700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456 + ... + 2537.

It is an arithmetic number, because the mean of its divisors is an integer number (52437).

2²⁰⁴⁷¹³ is an apocalyptic number.

It is an amenable number.

204713 is a deficient number, since it is larger than the sum of its proper divisors (5035).

204713 is an equidigital number, since it uses as much as digits as its factorization.

204713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 204713 is about 452.4522074209. The cubic root of 204713 is about 58.9361561622.

The spelling of 204713 in words is "two hundred four thousand, seven hundred thirteen".