16656648 has 32 divisors (see below), whose sum is σ = 41949600. Its totient is φ = 5511168.

The previous prime is 16656631. The next prime is 16656649. The reversal of 16656648 is 84665661.

It is not an unprimeable number, because it can be changed into a prime (16656649) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 840 + ... + 5832.

It is an arithmetic number, because the mean of its divisors is an integer number (1310925).

Almost surely, 2^16656648 is an apocalyptic number.

It is an amenable number.

16656648 is an abundant number, since it is smaller than the sum of its proper divisors (25292952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16656648 is a wasteful number, since it uses less digits than its factorization.

16656648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141 (or 5137 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 16656648 is about 4081.2556891231. The cubic root of 16656648 is about 255.3852845470.

The spelling of 16656648 in words is "sixteen million, six hundred fifty-six thousand, six hundred forty-eight".