616938317 has 2 divisors, whose sum is σ = 616938318. Its totient is φ = 616938316.

The previous prime is 616938307. The next prime is 616938349. The reversal of 616938317 is 713839616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570779881 + 46158436 = 23891^2 + 6794^2 .

It is a cyclic number.

It is not a de Polignac number, because 616938317 - 2⁸ = 616938061 is a prime.

It is a super-2 number, since 2×616938317² = 761225773965584978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616938307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308469158 + 308469159.

It is an arithmetic number, because the mean of its divisors is an integer number (308469159).

Almost surely, 2^616938317 is an apocalyptic number.

It is an amenable number.

616938317 is a deficient number, since it is larger than the sum of its proper divisors (1).

616938317 is an equidigital number, since it uses as much as digits as its factorization.

616938317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 616938317 is about 24838.2430336769. The cubic root of 616938317 is about 851.2959778312.

The spelling of 616938317 in words is "six hundred sixteen million, nine hundred thirty-eight thousand, three hundred seventeen".