204697 has 4 divisors (see below), whose sum is σ = 216756. Its totient is φ = 192640.

The previous prime is 204679. The next prime is 204707. The reversal of 204697 is 796402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 145161 + 59536 = 381^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 204697 - 2¹⁵ = 171929 is a prime.

It is a Duffinian number.

204697 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (204667) 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, 6004 + ... + 6037.

It is an arithmetic number, because the mean of its divisors is an integer number (54189).

2²⁰⁴⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

204697 is a deficient number, since it is larger than the sum of its proper divisors (12059).

204697 is a wasteful number, since it uses less digits than its factorization.

204697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12058.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 204697 is about 452.4345256498. The cubic root of 204697 is about 58.9346206742.

The spelling of 204697 in words is "two hundred four thousand, six hundred ninety-seven".