16659648 has 112 divisors (see below), whose sum is σ = 50718720. Its totient is φ = 5356800.

The previous prime is 16659641. The next prime is 16659673. The reversal of 16659648 is 84695661.

16659648 is a `hidden beast` number, since 16 + 6 + 596 + 48 = 666.

16659648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16659641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53413 + ... + 53723.

Almost surely, 2^16659648 is an apocalyptic number.

16659648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16659648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25359360).

16659648 is an abundant number, since it is smaller than the sum of its proper divisors (34059072).

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

16659648 is a wasteful number, since it uses less digits than its factorization.

16659648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 347 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 16659648 is about 4081.6232065197. The cubic root of 16659648 is about 255.4006159603.

The spelling of 16659648 in words is "sixteen million, six hundred fifty-nine thousand, six hundred forty-eight".