204689593 has 4 divisors (see below), whose sum is σ = 206162320. Its totient is φ = 203216868.

The previous prime is 204689579. The next prime is 204689599. The reversal of 204689593 is 395986402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204689593 - 2⁹ = 204689081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204689599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736155 + ... + 736432.

It is an arithmetic number, because the mean of its divisors is an integer number (51540580).

Almost surely, 2^204689593 is an apocalyptic number.

It is an amenable number.

204689593 is a deficient number, since it is larger than the sum of its proper divisors (1472727).

204689593 is a wasteful number, since it uses less digits than its factorization.

204689593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472726.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 204689593 is about 14306.9770741411. The cubic root of 204689593 is about 589.3390981213.

The spelling of 204689593 in words is "two hundred four million, six hundred eighty-nine thousand, five hundred ninety-three".