16690688 has 40 divisors (see below), whose sum is σ = 38121072. Its totient is φ = 7151616.

The previous prime is 16690673. The next prime is 16690691. The reversal of 16690688 is 88609661.

16690688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256 + ... + 5912.

Almost surely, 2^16690688 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 16690688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19060536).

16690688 is an abundant number, since it is smaller than the sum of its proper divisors (21430384).

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

16690688 is an frugal number, since it uses more digits than its factorization.

16690688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682 (or 4666 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 16690688 is about 4085.4238458207. The cubic root of 16690688 is about 255.5591370499.

The spelling of 16690688 in words is "sixteen million, six hundred ninety thousand, six hundred eighty-eight".