616618697 has 2 divisors, whose sum is σ = 616618698. Its totient is φ = 616618696.

The previous prime is 616618693. The next prime is 616618733. The reversal of 616618697 is 796816616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606095161 + 10523536 = 24619^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 616618697 - 2² = 616618693 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (616618693) 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, 308309348 + 308309349.

It is an arithmetic number, because the mean of its divisors is an integer number (308309349).

Almost surely, 2^616618697 is an apocalyptic number.

It is an amenable number.

616618697 is a deficient number, since it is larger than the sum of its proper divisors (1).

616618697 is an equidigital number, since it uses as much as digits as its factorization.

616618697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 616618697 is about 24831.8081701676. The cubic root of 616618697 is about 851.1489408615.

The spelling of 616618697 in words is "six hundred sixteen million, six hundred eighteen thousand, six hundred ninety-seven".