16663632 has 40 divisors (see below), whose sum is σ = 44535840. Its totient is φ = 5362560.

The previous prime is 16663631. The next prime is 16663651. The reversal of 16663632 is 23636661.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 16663593 and 16663602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663631) 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, 4594 + ... + 7377.

It is an arithmetic number, because the mean of its divisors is an integer number (1113396).

Almost surely, 2^16663632 is an apocalyptic number.

16663632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16663632 is an abundant number, since it is smaller than the sum of its proper divisors (27872208).

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

16663632 is a wasteful number, since it uses less digits than its factorization.

16663632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011 (or 12005 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The square root of 16663632 is about 4082.1112184751. Note that the first 3 decimals coincide. The cubic root of 16663632 is about 255.4209732322.

The spelling of 16663632 in words is "sixteen million, six hundred sixty-three thousand, six hundred thirty-two".