16662343 has 2 divisors, whose sum is σ = 16662344. Its totient is φ = 16662342.

The previous prime is 16662341. The next prime is 16662403. The reversal of 16662343 is 34326661.

It is a weak prime.

It is an emirp because it is prime and its reverse (34326661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16662343 - 2¹ = 16662341 is a prime.

Together with 16662341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16662341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8331171 + 8331172.

It is an arithmetic number, because the mean of its divisors is an integer number (8331172).

Almost surely, 2^16662343 is an apocalyptic number.

16662343 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662343 is an equidigital number, since it uses as much as digits as its factorization.

16662343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 31.

The square root of 16662343 is about 4081.9533314334. The cubic root of 16662343 is about 255.4143871105.

The spelling of 16662343 in words is "sixteen million, six hundred sixty-two thousand, three hundred forty-three".