616116689 has 2 divisors, whose sum is σ = 616116690. Its totient is φ = 616116688.

The previous prime is 616116649. The next prime is 616116701. The reversal of 616116689 is 986611616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310041664 + 306075025 = 17608^2 + 17495^2 .

It is a cyclic number.

It is not a de Polignac number, because 616116689 - 2²⁸ = 347681233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (616116649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308058344 + 308058345.

It is an arithmetic number, because the mean of its divisors is an integer number (308058345).

Almost surely, 2^616116689 is an apocalyptic number.

It is an amenable number.

616116689 is a deficient number, since it is larger than the sum of its proper divisors (1).

616116689 is an equidigital number, since it uses as much as digits as its factorization.

616116689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 616116689 is about 24821.6979475619. The cubic root of 616116689 is about 850.9178960862.

The spelling of 616116689 in words is "six hundred sixteen million, one hundred sixteen thousand, six hundred eighty-nine".