613504673 has 2 divisors, whose sum is σ = 613504674. Its totient is φ = 613504672.

The previous prime is 613504651. The next prime is 613504741. The reversal of 613504673 is 376405316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504990784 + 108513889 = 22472^2 + 10417^2 .

It is a cyclic number.

It is not a de Polignac number, because 613504673 - 2¹² = 613500577 is a prime.

It is not a weakly prime, because it can be changed into another prime (613504643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306752336 + 306752337.

It is an arithmetic number, because the mean of its divisors is an integer number (306752337).

Almost surely, 2^613504673 is an apocalyptic number.

It is an amenable number.

613504673 is a deficient number, since it is larger than the sum of its proper divisors (1).

613504673 is an equidigital number, since it uses as much as digits as its factorization.

613504673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 613504673 is about 24769.0264847046. The cubic root of 613504673 is about 849.7137088899.

Adding to 613504673 its reverse (376405316), we get a palindrome (989909989).

The spelling of 613504673 in words is "six hundred thirteen million, five hundred four thousand, six hundred seventy-three".