613656289 has 2 divisors, whose sum is σ = 613656290. Its totient is φ = 613656288.

The previous prime is 613656247. The next prime is 613656317. The reversal of 613656289 is 982656316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602211600 + 11444689 = 24540^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 613656289 - 2¹¹ = 613654241 is a prime.

It is not a weakly prime, because it can be changed into another prime (613656209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306828144 + 306828145.

It is an arithmetic number, because the mean of its divisors is an integer number (306828145).

Almost surely, 2^613656289 is an apocalyptic number.

It is an amenable number.

613656289 is a deficient number, since it is larger than the sum of its proper divisors (1).

613656289 is an equidigital number, since it uses as much as digits as its factorization.

613656289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 613656289 is about 24772.0868923068. The cubic root of 613656289 is about 849.7836999800.

The spelling of 613656289 in words is "six hundred thirteen million, six hundred fifty-six thousand, two hundred eighty-nine".