616116517 has 2 divisors, whose sum is σ = 616116518. Its totient is φ = 616116516.

The previous prime is 616116509. The next prime is 616116521. The reversal of 616116517 is 715611616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459716481 + 156400036 = 21441^2 + 12506^2 .

It is a cyclic number.

It is not a de Polignac number, because 616116517 - 2³ = 616116509 is a prime.

It is a super-2 number, since 2×616116517² = 759199125040422578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616116587) 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, 308058258 + 308058259.

It is an arithmetic number, because the mean of its divisors is an integer number (308058259).

Almost surely, 2^616116517 is an apocalyptic number.

It is an amenable number.

616116517 is a deficient number, since it is larger than the sum of its proper divisors (1).

616116517 is an equidigital number, since it uses as much as digits as its factorization.

616116517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 616116517 is about 24821.6944828511. The cubic root of 616116517 is about 850.9178169032.

The spelling of 616116517 in words is "six hundred sixteen million, one hundred sixteen thousand, five hundred seventeen".