16648265 has 4 divisors (see below), whose sum is σ = 19977924. Its totient is φ = 13318608.

The previous prime is 16648259. The next prime is 16648283. The reversal of 16648265 is 56284661.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4999696 + 11648569 = 2236^2 + 3413^2 .

It is a cyclic number.

It is not a de Polignac number, because 16648265 - 2¹² = 16644169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664822 + ... + 1664831.

It is an arithmetic number, because the mean of its divisors is an integer number (4994481).

Almost surely, 2^16648265 is an apocalyptic number.

It is an amenable number.

16648265 is a deficient number, since it is larger than the sum of its proper divisors (3329659).

16648265 is an equidigital number, since it uses as much as digits as its factorization.

16648265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329658.

The product of its digits is 69120, while the sum is 38.

The square root of 16648265 is about 4080.2285475203. The cubic root of 16648265 is about 255.3424337065.

The spelling of 16648265 in words is "sixteen million, six hundred forty-eight thousand, two hundred sixty-five".