16968817 has 2 divisors, whose sum is σ = 16968818. Its totient is φ = 16968816.

The previous prime is 16968773. The next prime is 16968821. The reversal of 16968817 is 71886961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12952801 + 4016016 = 3599^2 + 2004^2 .

It is an emirp because it is prime and its reverse (71886961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16968817 - 2⁷ = 16968689 is a prime.

It is not a weakly prime, because it can be changed into another prime (16968827) 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, 8484408 + 8484409.

It is an arithmetic number, because the mean of its divisors is an integer number (8484409).

Almost surely, 2^16968817 is an apocalyptic number.

It is an amenable number.

16968817 is a deficient number, since it is larger than the sum of its proper divisors (1).

16968817 is an equidigital number, since it uses as much as digits as its factorization.

16968817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The square root of 16968817 is about 4119.3223957345. The cubic root of 16968817 is about 256.9708466176.

It can be divided in two parts, 169 and 68817, that added together give a palindrome (68986).

The spelling of 16968817 in words is "sixteen million, nine hundred sixty-eight thousand, eight hundred seventeen".