16663836 has 96 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 4402944.

The previous prime is 16663831. The next prime is 16663847. The reversal of 16663836 is 63836661.

It is a junction number, because it is equal to n+sod(n) for n = 16663794 and 16663803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663831) 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 31 ways as a sum of consecutive naturals, for example, 84490 + ... + 84686.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

Almost surely, 2^16663836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16663836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23950080).

16663836 is an abundant number, since it is smaller than the sum of its proper divisors (31236324).

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

16663836 is a wasteful number, since it uses less digits than its factorization.

16663836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 16663836 is about 4082.1362054689. The cubic root of 16663836 is about 255.4220155353.

The spelling of 16663836 in words is "sixteen million, six hundred sixty-three thousand, eight hundred thirty-six".