613550513 has 2 divisors, whose sum is σ = 613550514. Its totient is φ = 613550512.

The previous prime is 613550491. The next prime is 613550521. The reversal of 613550513 is 315055316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584043889 + 29506624 = 24167^2 + 5432^2 .

It is a cyclic number.

It is not a de Polignac number, because 613550513 - 2⁶ = 613550449 is a prime.

It is not a weakly prime, because it can be changed into another prime (613550813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306775256 + 306775257.

It is an arithmetic number, because the mean of its divisors is an integer number (306775257).

Almost surely, 2^613550513 is an apocalyptic number.

It is an amenable number.

613550513 is a deficient number, since it is larger than the sum of its proper divisors (1).

613550513 is an equidigital number, since it uses as much as digits as its factorization.

613550513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 613550513 is about 24769.9518166669. The cubic root of 613550513 is about 849.7348714053.

The spelling of 613550513 in words is "six hundred thirteen million, five hundred fifty thousand, five hundred thirteen".