613664533 has 2 divisors, whose sum is σ = 613664534. Its totient is φ = 613664532.

The previous prime is 613664509. The next prime is 613664543. The reversal of 613664533 is 335466316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607228164 + 6436369 = 24642^2 + 2537^2 .

It is a cyclic number.

It is not a de Polignac number, because 613664533 - 2⁵ = 613664501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613664492 and 613664501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613664543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306832266 + 306832267.

It is an arithmetic number, because the mean of its divisors is an integer number (306832267).

Almost surely, 2^613664533 is an apocalyptic number.

It is an amenable number.

613664533 is a deficient number, since it is larger than the sum of its proper divisors (1).

613664533 is an equidigital number, since it uses as much as digits as its factorization.

613664533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 37.

The square root of 613664533 is about 24772.2532887099. The cubic root of 613664533 is about 849.7875053596.

The spelling of 613664533 in words is "six hundred thirteen million, six hundred sixty-four thousand, five hundred thirty-three".