204629 has 4 divisors (see below), whose sum is σ = 216684. Its totient is φ = 192576.

The previous prime is 204623. The next prime is 204641. The reversal of 204629 is 926402.

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 62500 + 142129 = 250^2 + 377^2 .

It is not a de Polignac number, because 204629 - 2⁴ = 204613 is a prime.

It is a Duffinian number.

204629 is a modest number, since divided by 629 gives 204 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204623) 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, 6002 + ... + 6035.

It is an arithmetic number, because the mean of its divisors is an integer number (54171).

2²⁰⁴⁶²⁹ is an apocalyptic number.

It is an amenable number.

204629 is a deficient number, since it is larger than the sum of its proper divisors (12055).

204629 is a wasteful number, since it uses less digits than its factorization.

204629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12054.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 204629 is about 452.3593704125. The cubic root of 204629 is about 58.9280939574.

The spelling of 204629 in words is "two hundred four thousand, six hundred twenty-nine".