16648543 has 2 divisors, whose sum is σ = 16648544. Its totient is φ = 16648542.

The previous prime is 16648517. The next prime is 16648571. The reversal of 16648543 is 34584661.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (34584661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16648543 - 2⁹ = 16648031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16648043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8324271 + 8324272.

It is an arithmetic number, because the mean of its divisors is an integer number (8324272).

Almost surely, 2^16648543 is an apocalyptic number.

16648543 is a deficient number, since it is larger than the sum of its proper divisors (1).

16648543 is an equidigital number, since it uses as much as digits as its factorization.

16648543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 16648543 is about 4080.2626140973. The cubic root of 16648543 is about 255.3438549718.

The spelling of 16648543 in words is "sixteen million, six hundred forty-eight thousand, five hundred forty-three".