16733664 has 72 divisors (see below), whose sum is σ = 48157200. Its totient is φ = 5511168.

The previous prime is 16733641. The next prime is 16733677. The reversal of 16733664 is 46633761.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27637 + ... + 28235.

It is an arithmetic number, because the mean of its divisors is an integer number (668850).

Almost surely, 2^16733664 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 16733664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24078600).

16733664 is an abundant number, since it is smaller than the sum of its proper divisors (31423536).

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

16733664 is a wasteful number, since it uses less digits than its factorization.

16733664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 701 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 16733664 is about 4090.6801390478. The cubic root of 16733664 is about 255.7782911173.

The spelling of 16733664 in words is "sixteen million, seven hundred thirty-three thousand, six hundred sixty-four".