613968659 has 2 divisors, whose sum is σ = 613968660. Its totient is φ = 613968658.

The previous prime is 613968629. The next prime is 613968697. The reversal of 613968659 is 956869316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613968659 - 2⁸ = 613968403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 613968659.

It is not a weakly prime, because it can be changed into another prime (613968629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306984329 + 306984330.

It is an arithmetic number, because the mean of its divisors is an integer number (306984330).

Almost surely, 2^613968659 is an apocalyptic number.

613968659 is a deficient number, since it is larger than the sum of its proper divisors (1).

613968659 is an equidigital number, since it uses as much as digits as its factorization.

613968659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 53.

The square root of 613968659 is about 24778.3909687453. The cubic root of 613968659 is about 849.9278642359.

The spelling of 613968659 in words is "six hundred thirteen million, nine hundred sixty-eight thousand, six hundred fifty-nine".