204861801 has 8 divisors (see below), whose sum is σ = 278303040. Its totient is φ = 133997552.

The previous prime is 204861779. The next prime is 204861817. The reversal of 204861801 is 108168402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204861801 - 2⁶ = 204861737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204861841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644061 + ... + 644378.

It is an arithmetic number, because the mean of its divisors is an integer number (34787880).

Almost surely, 2^204861801 is an apocalyptic number.

It is an amenable number.

204861801 is a deficient number, since it is larger than the sum of its proper divisors (73441239).

204861801 is a wasteful number, since it uses less digits than its factorization.

204861801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288495.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 204861801 is about 14312.9941312082. The cubic root of 204861801 is about 589.5043246609.

The spelling of 204861801 in words is "two hundred four million, eight hundred sixty-one thousand, eight hundred one".