204660427 has 4 divisors (see below), whose sum is σ = 204691816. Its totient is φ = 204629040.

The previous prime is 204660409. The next prime is 204660473. The reversal of 204660427 is 724066402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204660427 - 2⁷ = 204660299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204660497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833 + ... + 20314.

It is an arithmetic number, because the mean of its divisors is an integer number (51172954).

Almost surely, 2^204660427 is an apocalyptic number.

204660427 is a deficient number, since it is larger than the sum of its proper divisors (31389).

204660427 is an equidigital number, since it uses as much as digits as its factorization.

204660427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31388.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 204660427 is about 14305.9577449397. The cubic root of 204660427 is about 589.3111053603.

The spelling of 204660427 in words is "two hundred four million, six hundred sixty thousand, four hundred twenty-seven".