16663436 has 24 divisors (see below), whose sum is σ = 29948016. Its totient is φ = 8110080.

The previous prime is 16663433. The next prime is 16663441. The reversal of 16663436 is 63436661.

It is a junction number, because it is equal to n+sod(n) for n = 16663396 and 16663405.

It is not an unprimeable number, because it can be changed into a prime (16663433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25676 + ... + 26316.

It is an arithmetic number, because the mean of its divisors is an integer number (1247834).

Almost surely, 2^16663436 is an apocalyptic number.

It is an amenable number.

16663436 is a deficient number, since it is larger than the sum of its proper divisors (13284580).

16663436 is a wasteful number, since it uses less digits than its factorization.

16663436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 807 counting only the distinct ones).

The product of its digits is 46656, while the sum is 35.

The square root of 16663436 is about 4082.0872112193. The cubic root of 16663436 is about 255.4199717957.

The spelling of 16663436 in words is "sixteen million, six hundred sixty-three thousand, four hundred thirty-six".