205804001 has 8 divisors (see below), whose sum is σ = 222169920. Its totient is φ = 189514512.

The previous prime is 205803979. The next prime is 205804019. The reversal of 205804001 is 100408502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205804001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205804031) 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 7 ways as a sum of consecutive naturals, for example, 13445 + ... + 24338.

It is an arithmetic number, because the mean of its divisors is an integer number (27771240).

Almost surely, 2^205804001 is an apocalyptic number.

It is an amenable number.

205804001 is a deficient number, since it is larger than the sum of its proper divisors (16365919).

205804001 is a wasteful number, since it uses less digits than its factorization.

205804001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38215.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 205804001 is about 14345.8705208154. The cubic root of 205804001 is about 590.4066917342.

The spelling of 205804001 in words is "two hundred five million, eight hundred four thousand, one".