204324681 has 16 divisors (see below), whose sum is σ = 298027008. Its totient is φ = 123488400.

The previous prime is 204324671. The next prime is 204324707. The reversal of 204324681 is 186423402.

It is a de Polignac number, because none of the positive numbers 2^k-204324681 is a prime.

It is a super-2 number, since 2×204324681² = 83497150531503522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204324641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3676 + ... + 20546.

It is an arithmetic number, because the mean of its divisors is an integer number (18626688).

Almost surely, 2^204324681 is an apocalyptic number.

It is an amenable number.

204324681 is a deficient number, since it is larger than the sum of its proper divisors (93702327).

204324681 is a wasteful number, since it uses less digits than its factorization.

204324681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17252.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 204324681 is about 14294.2184466308. The cubic root of 204324681 is about 588.9886734764.

The spelling of 204324681 in words is "two hundred four million, three hundred twenty-four thousand, six hundred eighty-one".