204660045 has 12 divisors (see below), whose sum is σ = 354744156. Its totient is φ = 109152000.

The previous prime is 204660041. The next prime is 204660067. The reversal of 204660045 is 540066402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58201641 + 146458404 = 7629^2 + 12102^2 .

It is not a de Polignac number, because 204660045 - 2² = 204660041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204660041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2273956 + ... + 2274045.

It is an arithmetic number, because the mean of its divisors is an integer number (29562013).

Almost surely, 2^204660045 is an apocalyptic number.

It is an amenable number.

204660045 is a deficient number, since it is larger than the sum of its proper divisors (150084111).

204660045 is a wasteful number, since it uses less digits than its factorization.

204660045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548012 (or 4548009 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 204660045 is about 14305.9443938525. The cubic root of 204660045 is about 589.3107387090.

The spelling of 204660045 in words is "two hundred four million, six hundred sixty thousand, forty-five".