17968417 has 2 divisors, whose sum is σ = 17968418. Its totient is φ = 17968416.

The previous prime is 17968411. The next prime is 17968459. The reversal of 17968417 is 71486971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11229201 + 6739216 = 3351^2 + 2596^2 .

It is an emirp because it is prime and its reverse (71486971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17968417 - 2⁷ = 17968289 is a prime.

It is not a weakly prime, because it can be changed into another prime (17968411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8984208 + 8984209.

It is an arithmetic number, because the mean of its divisors is an integer number (8984209).

Almost surely, 2^17968417 is an apocalyptic number.

It is an amenable number.

17968417 is a deficient number, since it is larger than the sum of its proper divisors (1).

17968417 is an equidigital number, since it uses as much as digits as its factorization.

17968417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 17968417 is about 4238.9169607342. The cubic root of 17968417 is about 261.9207702858.

The spelling of 17968417 in words is "seventeen million, nine hundred sixty-eight thousand, four hundred seventeen".