613663213 has 2 divisors, whose sum is σ = 613663214. Its totient is φ = 613663212.

The previous prime is 613663201. The next prime is 613663217. The reversal of 613663213 is 312366316.

613663213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396925929 + 216737284 = 19923^2 + 14722^2 .

It is a cyclic number.

It is not a de Polignac number, because 613663213 - 2⁵ = 613663181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613663217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306831606 + 306831607.

It is an arithmetic number, because the mean of its divisors is an integer number (306831607).

Almost surely, 2^613663213 is an apocalyptic number.

It is an amenable number.

613663213 is a deficient number, since it is larger than the sum of its proper divisors (1).

613663213 is an equidigital number, since it uses as much as digits as its factorization.

613663213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

The square root of 613663213 is about 24772.2266459840. The cubic root of 613663213 is about 849.7868960580.

The spelling of 613663213 in words is "six hundred thirteen million, six hundred sixty-three thousand, two hundred thirteen".