16719664 has 40 divisors (see below), whose sum is σ = 36025472. Its totient is φ = 7464960.

The previous prime is 16719623. The next prime is 16719667. The reversal of 16719664 is 46691761.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (16719667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5152 + ... + 7744.

Almost surely, 2^16719664 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 16719664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18012736).

16719664 is an abundant number, since it is smaller than the sum of its proper divisors (19305808).

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

16719664 is a wasteful number, since it uses less digits than its factorization.

16719664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 2639 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 16719664 is about 4088.9685741028. The cubic root of 16719664 is about 255.7069400337.

The spelling of 16719664 in words is "sixteen million, seven hundred nineteen thousand, six hundred sixty-four".