204422661 has 12 divisors (see below), whose sum is σ = 295402380. Its totient is φ = 136224000.

The previous prime is 204422657. The next prime is 204422663. The reversal of 204422661 is 166224402.

204422661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 168350625 + 36072036 = 12975^2 + 6006^2 .

It is not a de Polignac number, because 204422661 - 2² = 204422657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204422663) 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, 34411 + ... + 39911.

It is an arithmetic number, because the mean of its divisors is an integer number (24616865).

Almost surely, 2^204422661 is an apocalyptic number.

It is an amenable number.

204422661 is a deficient number, since it is larger than the sum of its proper divisors (90979719).

204422661 is a wasteful number, since it uses less digits than its factorization.

204422661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9636 (or 9633 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 204422661 is about 14297.6452956422. The cubic root of 204422661 is about 589.0828045231.

The spelling of 204422661 in words is "two hundred four million, four hundred twenty-two thousand, six hundred sixty-one".