16648613 has 2 divisors, whose sum is σ = 16648614. Its totient is φ = 16648612.

The previous prime is 16648601. The next prime is 16648633. The reversal of 16648613 is 31684661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9042049 + 7606564 = 3007^2 + 2758^2 .

It is an emirp because it is prime and its reverse (31684661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16648613 - 2¹⁴ = 16632229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16648633) 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, 8324306 + 8324307.

It is an arithmetic number, because the mean of its divisors is an integer number (8324307).

Almost surely, 2^16648613 is an apocalyptic number.

It is an amenable number.

16648613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16648613 is an equidigital number, since it uses as much as digits as its factorization.

16648613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 16648613 is about 4080.2711919675. The cubic root of 16648613 is about 255.3442128418.

The spelling of 16648613 in words is "sixteen million, six hundred forty-eight thousand, six hundred thirteen".