204561963 has 16 divisors (see below), whose sum is σ = 312832000. Its totient is φ = 131974920.

The previous prime is 204561953. The next prime is 204561967. The reversal of 204561963 is 369165402.

It is a happy number.

204561963 is a `hidden beast` number, since 2 + 0 + 4 + 561 + 96 + 3 = 666.

204561963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204561963 - 2⁶ = 204561899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204561967) 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, 121363 + ... + 123036.

It is an arithmetic number, because the mean of its divisors is an integer number (19552000).

Almost surely, 2^204561963 is an apocalyptic number.

204561963 is a deficient number, since it is larger than the sum of its proper divisors (108270037).

204561963 is a wasteful number, since it uses less digits than its factorization.

204561963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244439 (or 244433 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 204561963 is about 14302.5159674793. The cubic root of 204561963 is about 589.2165825490.

The spelling of 204561963 in words is "two hundred four million, five hundred sixty-one thousand, nine hundred sixty-three".