204664064 has 36 divisors (see below), whose sum is σ = 445673760. Its totient is φ = 93027840.

The previous prime is 204664063. The next prime is 204664073. The reversal of 204664064 is 460466402.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 204664064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204664063) 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 in 3 ways as a sum of consecutive naturals, for example, 33524 + ... + 39155.

Almost surely, 2^204664064 is an apocalyptic number.

It is an amenable number.

204664064 is an abundant number, since it is smaller than the sum of its proper divisors (241009696).

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

204664064 is an equidigital number, since it uses as much as digits as its factorization.

204664064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706 (or 72692 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 204664064 is about 14306.0848592478. The cubic root of 204664064 is about 589.3145962025.

The spelling of 204664064 in words is "two hundred four million, six hundred sixty-four thousand, sixty-four".