16712981 has 2 divisors, whose sum is σ = 16712982. Its totient is φ = 16712980.

The previous prime is 16712977. The next prime is 16713001. The reversal of 16712981 is 18921761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16532356 + 180625 = 4066^2 + 425^2 .

It is an emirp because it is prime and its reverse (18921761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16712981 - 2² = 16712977 is a prime.

It is a super-2 number, since 2×16712981² = 558647467812722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16712081) 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, 8356490 + 8356491.

It is an arithmetic number, because the mean of its divisors is an integer number (8356491).

Almost surely, 2^16712981 is an apocalyptic number.

It is an amenable number.

16712981 is a deficient number, since it is larger than the sum of its proper divisors (1).

16712981 is an equidigital number, since it uses as much as digits as its factorization.

16712981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 35.

The square root of 16712981 is about 4088.1512936779. The cubic root of 16712981 is about 255.6728660392.

The spelling of 16712981 in words is "sixteen million, seven hundred twelve thousand, nine hundred eighty-one".