613247513 has 2 divisors, whose sum is σ = 613247514. Its totient is φ = 613247512.

The previous prime is 613247507. The next prime is 613247539. The reversal of 613247513 is 315742316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608954329 + 4293184 = 24677^2 + 2072^2 .

It is a cyclic number.

It is not a de Polignac number, because 613247513 - 2¹⁸ = 612985369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 613247513.

It is not a weakly prime, because it can be changed into another prime (613247563) 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, 306623756 + 306623757.

It is an arithmetic number, because the mean of its divisors is an integer number (306623757).

Almost surely, 2^613247513 is an apocalyptic number.

It is an amenable number.

613247513 is a deficient number, since it is larger than the sum of its proper divisors (1).

613247513 is an equidigital number, since it uses as much as digits as its factorization.

613247513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 613247513 is about 24763.8347797751. The cubic root of 613247513 is about 849.5949687373.

Adding to 613247513 its reverse (315742316), we get a palindrome (928989829).

The spelling of 613247513 in words is "six hundred thirteen million, two hundred forty-seven thousand, five hundred thirteen".