204597345 has 16 divisors (see below), whose sum is σ = 334321920. Its totient is φ = 106796544.

The previous prime is 204597343. The next prime is 204597359. The reversal of 204597345 is 543795402.

It is not a de Polignac number, because 204597345 - 2¹ = 204597343 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204597343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144400 + ... + 145809.

It is an arithmetic number, because the mean of its divisors is an integer number (20895120).

Almost surely, 2^204597345 is an apocalyptic number.

It is an amenable number.

204597345 is a deficient number, since it is larger than the sum of its proper divisors (129724575).

204597345 is a wasteful number, since it uses less digits than its factorization.

204597345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290264.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 204597345 is about 14303.7528292403. The cubic root of 204597345 is about 589.2505518151.

The spelling of 204597345 in words is "two hundred four million, five hundred ninety-seven thousand, three hundred forty-five".