204648345 has 48 divisors (see below), whose sum is σ = 388312704. Its totient is φ = 98880000.

The previous prime is 204648289. The next prime is 204648347. The reversal of 204648345 is 543846402.

204648345 is a `hidden beast` number, since 2 + 0 + 4 + 648 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 204648345 - 2²² = 200454041 is a prime.

It is a super-2 number, since 2×204648345² = 83761890222478050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204648347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197980 + ... + 199010.

It is an arithmetic number, because the mean of its divisors is an integer number (8089848).

Almost surely, 2^204648345 is an apocalyptic number.

It is an amenable number.

204648345 is a deficient number, since it is larger than the sum of its proper divisors (183664359).

204648345 is a wasteful number, since it uses less digits than its factorization.

204648345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1451 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 204648345 is about 14305.5354670841. The cubic root of 204648345 is about 589.2995085948.

The spelling of 204648345 in words is "two hundred four million, six hundred forty-eight thousand, three hundred forty-five".