204561612 has 60 divisors (see below), whose sum is σ = 566236440. Its totient is φ = 64174464.

The previous prime is 204561607. The next prime is 204561613. The reversal of 204561612 is 216165402.

204561612 is a `hidden beast` number, since 2 + 0 + 45 + 6 + 1 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204561613) 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 19 ways as a sum of consecutive naturals, for example, 13062 + ... + 24077.

It is an arithmetic number, because the mean of its divisors is an integer number (9437274).

Almost surely, 2^204561612 is an apocalyptic number.

It is an amenable number.

204561612 is an abundant number, since it is smaller than the sum of its proper divisors (361674828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204561612 is a wasteful number, since it uses less digits than its factorization.

204561612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37172 (or 37161 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 204561612 is about 14302.5036969057. The cubic root of 204561612 is about 589.2162455441.

The spelling of 204561612 in words is "two hundred four million, five hundred sixty-one thousand, six hundred twelve".