318768677 has 2 divisors, whose sum is σ = 318768678. Its totient is φ = 318768676.

The previous prime is 318768631. The next prime is 318768733. The reversal of 318768677 is 776867813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318229921 + 538756 = 17839^2 + 734^2 .

It is an emirp because it is prime and its reverse (776867813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318768677 - 2⁶ = 318768613 is a prime.

It is a super-2 number, since 2×318768677² = 203226938872660658, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318768607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159384338 + 159384339.

It is an arithmetic number, because the mean of its divisors is an integer number (159384339).

Almost surely, 2^318768677 is an apocalyptic number.

It is an amenable number.

318768677 is a deficient number, since it is larger than the sum of its proper divisors (1).

318768677 is an equidigital number, since it uses as much as digits as its factorization.

318768677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 53.

The square root of 318768677 is about 17854.0941243178. The cubic root of 318768677 is about 683.1119457057. Note that the first 3 decimals are identical.

The spelling of 318768677 in words is "three hundred eighteen million, seven hundred sixty-eight thousand, six hundred seventy-seven".