38688317 has 2 divisors, whose sum is σ = 38688318. Its totient is φ = 38688316.

The previous prime is 38688301. The next prime is 38688337. The reversal of 38688317 is 71388683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36711481 + 1976836 = 6059^2 + 1406^2 .

It is an emirp because it is prime and its reverse (71388683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38688317 - 2⁴ = 38688301 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 (38688337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19344158 + 19344159.

It is an arithmetic number, because the mean of its divisors is an integer number (19344159).

Almost surely, 2^38688317 is an apocalyptic number.

It is an amenable number.

38688317 is a deficient number, since it is larger than the sum of its proper divisors (1).

38688317 is an equidigital number, since it uses as much as digits as its factorization.

38688317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 38688317 is about 6219.9933279707. The cubic root of 38688317 is about 338.2153226925.

The spelling of 38688317 in words is "thirty-eight million, six hundred eighty-eight thousand, three hundred seventeen".