613312673 has 2 divisors, whose sum is σ = 613312674. Its totient is φ = 613312672.

The previous prime is 613312669. The next prime is 613312691. The reversal of 613312673 is 376213316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447237904 + 166074769 = 21148^2 + 12887^2 .

It is a cyclic number.

It is not a de Polignac number, because 613312673 - 2² = 613312669 is a prime.

It is not a weakly prime, because it can be changed into another prime (613317673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306656336 + 306656337.

It is an arithmetic number, because the mean of its divisors is an integer number (306656337).

Almost surely, 2^613312673 is an apocalyptic number.

It is an amenable number.

613312673 is a deficient number, since it is larger than the sum of its proper divisors (1).

613312673 is an equidigital number, since it uses as much as digits as its factorization.

613312673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 613312673 is about 24765.1503730545. The cubic root of 613312673 is about 849.6250586256.

Adding to 613312673 its reverse (376213316), we get a palindrome (989525989).

The spelling of 613312673 in words is "six hundred thirteen million, three hundred twelve thousand, six hundred seventy-three".