613505597 has 2 divisors, whose sum is σ = 613505598. Its totient is φ = 613505596.

The previous prime is 613505567. The next prime is 613505647. The reversal of 613505597 is 795505316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 578210116 + 35295481 = 24046^2 + 5941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613505597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613505567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306752798 + 306752799.

It is an arithmetic number, because the mean of its divisors is an integer number (306752799).

Almost surely, 2^613505597 is an apocalyptic number.

It is an amenable number.

613505597 is a deficient number, since it is larger than the sum of its proper divisors (1).

613505597 is an equidigital number, since it uses as much as digits as its factorization.

613505597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 41.

The square root of 613505597 is about 24769.0451370254. The cubic root of 613505597 is about 849.7141354746.

The spelling of 613505597 in words is "six hundred thirteen million, five hundred five thousand, five hundred ninety-seven".