613630663 has 2 divisors, whose sum is σ = 613630664. Its totient is φ = 613630662.

The previous prime is 613630613. The next prime is 613630697. The reversal of 613630663 is 366036316.

It is an a-pointer prime, because the next prime (613630697) can be obtained adding 613630663 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613630663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613630613) 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, 306815331 + 306815332.

It is an arithmetic number, because the mean of its divisors is an integer number (306815332).

Almost surely, 2^613630663 is an apocalyptic number.

613630663 is a deficient number, since it is larger than the sum of its proper divisors (1).

613630663 is an equidigital number, since it uses as much as digits as its factorization.

613630663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 613630663 is about 24771.5696515178. The cubic root of 613630663 is about 849.7718709585.

Adding to 613630663 its reverse (366036316), we get a palindrome (979666979).

The spelling of 613630663 in words is "six hundred thirteen million, six hundred thirty thousand, six hundred sixty-three".