16648279 has 4 divisors (see below), whose sum is σ = 16668520. Its totient is φ = 16628040.

The previous prime is 16648259. The next prime is 16648283. The reversal of 16648279 is 97284661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16648279 - 2⁹ = 16647767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16648259) 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 in 3 ways as a sum of consecutive naturals, for example, 8832 + ... + 10549.

It is an arithmetic number, because the mean of its divisors is an integer number (4167130).

Almost surely, 2^16648279 is an apocalyptic number.

16648279 is a deficient number, since it is larger than the sum of its proper divisors (20241).

16648279 is an equidigital number, since it uses as much as digits as its factorization.

16648279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20240.

The product of its digits is 145152, while the sum is 43.

The square root of 16648279 is about 4080.2302631102. The cubic root of 16648279 is about 255.3425052814.

The spelling of 16648279 in words is "sixteen million, six hundred forty-eight thousand, two hundred seventy-nine".