204355664 has 10 divisors (see below), whose sum is σ = 395939130. Its totient is φ = 102177824.

The previous prime is 204355661. The next prime is 204355693. The reversal of 204355664 is 466553402.

It is a happy number.

204355664 is digitally balanced in base 3, 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 only one way, i.e., 196560400 + 7795264 = 14020^2 + 2792^2 .

It is a super-2 number, since 2×204355664² = 83522474817761792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204355661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6386099 + ... + 6386130.

It is an arithmetic number, because the mean of its divisors is an integer number (39593913).

Almost surely, 2^204355664 is an apocalyptic number.

It is an amenable number.

204355664 is a deficient number, since it is larger than the sum of its proper divisors (191583466).

204355664 is a wasteful number, since it uses less digits than its factorization.

204355664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12772237 (or 12772231 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 204355664 is about 14295.3021653969. The cubic root of 204355664 is about 589.0184426224.

The spelling of 204355664 in words is "two hundred four million, three hundred fifty-five thousand, six hundred sixty-four".