16663332 has 72 divisors (see below), whose sum is σ = 47918304. Its totient is φ = 4478208.

The previous prime is 16663321. The next prime is 16663351. The reversal of 16663332 is 23336661.

16663332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-5 number, since 5×16663332⁵ (a number of 37 digits) contains 55555 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 16663332.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9163 + ... + 10829.

It is an arithmetic number, because the mean of its divisors is an integer number (665532).

Almost surely, 2^16663332 is an apocalyptic number.

16663332 is a gapful number since it is divisible by the number (12) 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 16663332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23959152).

16663332 is an abundant number, since it is smaller than the sum of its proper divisors (31254972).

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

16663332 is a wasteful number, since it uses less digits than its factorization.

16663332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1696 counting only the distinct ones).

The product of its digits is 11664, while the sum is 30.

The square root of 16663332 is about 4082.0744726181. The cubic root of 16663332 is about 255.4194404181.

Adding to 16663332 its reverse (23336661), we get a palindrome (39999993).

The spelling of 16663332 in words is "sixteen million, six hundred sixty-three thousand, three hundred thirty-two".