204964 has 6 divisors (see below), whose sum is σ = 358694. Its totient is φ = 102480.

The previous prime is 204947. The next prime is 204973. The reversal of 204964 is 469402.

It can be written as a sum of positive squares in only one way, i.e., 168100 + 36864 = 410^2 + 192^2 .

It is an unprimeable number.

204964 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25617 + ... + 25624.

2²⁰⁴⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

204964 is a deficient number, since it is larger than the sum of its proper divisors (153730).

204964 is a wasteful number, since it uses less digits than its factorization.

204964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51245 (or 51243 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 204964 is about 452.7294998120. The cubic root of 204964 is about 58.9602336648.

The spelling of 204964 in words is "two hundred four thousand, nine hundred sixty-four".