16566016 has 36 divisors (see below), whose sum is σ = 33353992. Its totient is φ = 8211456.

The previous prime is 16565993. The next prime is 16566019. The reversal of 16566016 is 61066561.

It is a super-2 number, since 2×16566016² = 548865772224512, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16566019) 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 3 ways as a sum of consecutive naturals, for example, 41530 + ... + 41926.

Almost surely, 2^16566016 is an apocalyptic number.

16566016 is a gapful number since it is divisible by the number (16) 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 16566016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16676996).

16566016 is an abundant number, since it is smaller than the sum of its proper divisors (16787976).

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

16566016 is an equidigital number, since it uses as much as digits as its factorization.

16566016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 16566016 is about 4070.1370984280. The cubic root of 16566016 is about 254.9212418573.

The spelling of 16566016 in words is "sixteen million, five hundred sixty-six thousand, sixteen".