16717213 has 2 divisors, whose sum is σ = 16717214. Its totient is φ = 16717212.

The previous prime is 16717193. The next prime is 16717231. The reversal of 16717213 is 31271761.

Together with next prime (16717231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11819844 + 4897369 = 3438^2 + 2213^2 .

It is an emirp because it is prime and its reverse (31271761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16717213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16717013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8358606 + 8358607.

It is an arithmetic number, because the mean of its divisors is an integer number (8358607).

Almost surely, 2^16717213 is an apocalyptic number.

It is an amenable number.

16717213 is a deficient number, since it is larger than the sum of its proper divisors (1).

16717213 is an equidigital number, since it uses as much as digits as its factorization.

16717213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 28.

The square root of 16717213 is about 4088.6688542850. The cubic root of 16717213 is about 255.6944444011.

Adding to 16717213 its reverse (31271761), we get a palindrome (47988974).

The spelling of 16717213 in words is "sixteen million, seven hundred seventeen thousand, two hundred thirteen".