613326563 has 2 divisors, whose sum is σ = 613326564. Its totient is φ = 613326562.

The previous prime is 613326523. The next prime is 613326569. The reversal of 613326563 is 365623316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613326563 - 2¹⁰ = 613325539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (613326569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306663281 + 306663282.

It is an arithmetic number, because the mean of its divisors is an integer number (306663282).

Almost surely, 2^613326563 is an apocalyptic number.

613326563 is a deficient number, since it is larger than the sum of its proper divisors (1).

613326563 is an equidigital number, since it uses as much as digits as its factorization.

613326563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 35.

The square root of 613326563 is about 24765.4308058632. The cubic root of 613326563 is about 849.6314725390.

Adding to 613326563 its reverse (365623316), we get a palindrome (978949879).

The spelling of 613326563 in words is "six hundred thirteen million, three hundred twenty-six thousand, five hundred sixty-three".