204998 has 4 divisors (see below), whose sum is σ = 307500. Its totient is φ = 102498.

The previous prime is 204983. The next prime is 205019. The reversal of 204998 is 899402.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204998.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51248 + ... + 51251.

It is an arithmetic number, because the mean of its divisors is an integer number (76875).

2²⁰⁴⁹⁹⁸ is an apocalyptic number.

204998 is a deficient number, since it is larger than the sum of its proper divisors (102502).

204998 is a wasteful number, since it uses less digits than its factorization.

204998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102501.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 204998 is about 452.7670482710. The cubic root of 204998 is about 58.9634936473.

The spelling of 204998 in words is "two hundred four thousand, nine hundred ninety-eight".