318636677 has 2 divisors, whose sum is σ = 318636678. Its totient is φ = 318636676.

The previous prime is 318636673. The next prime is 318636709. The reversal of 318636677 is 776636813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275261281 + 43375396 = 16591^2 + 6586^2 .

It is an emirp because it is prime and its reverse (776636813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318636677 - 2² = 318636673 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318636673) 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, 159318338 + 159318339.

It is an arithmetic number, because the mean of its divisors is an integer number (159318339).

Almost surely, 2^318636677 is an apocalyptic number.

It is an amenable number.

318636677 is a deficient number, since it is larger than the sum of its proper divisors (1).

318636677 is an equidigital number, since it uses as much as digits as its factorization.

318636677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 318636677 is about 17850.3971104287. The cubic root of 318636677 is about 683.0176419753.

The spelling of 318636677 in words is "three hundred eighteen million, six hundred thirty-six thousand, six hundred seventy-seven".