204247613 has 16 divisors (see below), whose sum is σ = 217676160. Its totient is φ = 191245824.

The previous prime is 204247607. The next prime is 204247633. The reversal of 204247613 is 316742402.

It is a cyclic number.

It is not a de Polignac number, because 204247613 - 2⁴ = 204247597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204247633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230870 + ... + 231752.

It is an arithmetic number, because the mean of its divisors is an integer number (13604760).

Almost surely, 2^204247613 is an apocalyptic number.

204247613 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204247613 is a deficient number, since it is larger than the sum of its proper divisors (13428547).

204247613 is a wasteful number, since it uses less digits than its factorization.

204247613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 204247613 is about 14291.5224171535. The cubic root of 204247613 is about 588.9146117965.

The spelling of 204247613 in words is "two hundred four million, two hundred forty-seven thousand, six hundred thirteen".