17968679 has 2 divisors, whose sum is σ = 17968680. Its totient is φ = 17968678.

The previous prime is 17968651. The next prime is 17968697. The reversal of 17968679 is 97686971.

It is a happy number.

Together with next prime (17968697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (97686971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17968679 - 2¹⁶ = 17903143 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17968679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17968649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8984339 + 8984340.

It is an arithmetic number, because the mean of its divisors is an integer number (8984340).

Almost surely, 2^17968679 is an apocalyptic number.

17968679 is a deficient number, since it is larger than the sum of its proper divisors (1).

17968679 is an equidigital number, since it uses as much as digits as its factorization.

17968679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 17968679 is about 4238.9478647419. The cubic root of 17968679 is about 261.9220433141.

The spelling of 17968679 in words is "seventeen million, nine hundred sixty-eight thousand, six hundred seventy-nine".