204672613 has 2 divisors, whose sum is σ = 204672614. Its totient is φ = 204672612.

The previous prime is 204672599. The next prime is 204672659. The reversal of 204672613 is 316276402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177235969 + 27436644 = 13313^2 + 5238^2 .

It is a cyclic number.

It is not a de Polignac number, because 204672613 - 2⁵ = 204672581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204672683) 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 as a sum of consecutive naturals, namely, 102336306 + 102336307.

It is an arithmetic number, because the mean of its divisors is an integer number (102336307).

Almost surely, 2^204672613 is an apocalyptic number.

It is an amenable number.

204672613 is a deficient number, since it is larger than the sum of its proper divisors (1).

204672613 is an equidigital number, since it uses as much as digits as its factorization.

204672613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 204672613 is about 14306.3836450726. The cubic root of 204672613 is about 589.3228014866.

The spelling of 204672613 in words is "two hundred four million, six hundred seventy-two thousand, six hundred thirteen".