616330657 has 2 divisors, whose sum is σ = 616330658. Its totient is φ = 616330656.

The previous prime is 616330577. The next prime is 616330669. The reversal of 616330657 is 756033616.

616330657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442723681 + 173606976 = 21041^2 + 13176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616330657 is a prime.

It is not a weakly prime, because it can be changed into another prime (116330657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308165328 + 308165329.

It is an arithmetic number, because the mean of its divisors is an integer number (308165329).

Almost surely, 2^616330657 is an apocalyptic number.

It is an amenable number.

616330657 is a deficient number, since it is larger than the sum of its proper divisors (1).

616330657 is an equidigital number, since it uses as much as digits as its factorization.

616330657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 616330657 is about 24826.0076734057. The cubic root of 616330657 is about 851.0163883205.

The spelling of 616330657 in words is "six hundred sixteen million, three hundred thirty thousand, six hundred fifty-seven".