204994656 has 72 divisors (see below), whose sum is σ = 588205800. Its totient is φ = 67716096.

The previous prime is 204994633. The next prime is 204994663. The reversal of 204994656 is 656499402.

204994656 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29395 + ... + 35693.

It is an arithmetic number, because the mean of its divisors is an integer number (8169525).

Almost surely, 2^204994656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204994656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294102900).

204994656 is an abundant number, since it is smaller than the sum of its proper divisors (383211144).

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

204994656 is a wasteful number, since it uses less digits than its factorization.

204994656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6428 (or 6417 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 204994656 is about 14317.6344414851. The cubic root of 204994656 is about 589.6317303438.

The spelling of 204994656 in words is "two hundred four million, nine hundred ninety-four thousand, six hundred fifty-six".