16689608 has 32 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 7664448.

The previous prime is 16689599. The next prime is 16689611. The reversal of 16689608 is 80698661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39623 + ... + 40041.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^16689608 is an apocalyptic number.

It is an amenable number.

16689608 is an abundant number, since it is smaller than the sum of its proper divisors (17179192).

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

16689608 is a wasteful number, since it uses less digits than its factorization.

16689608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 817 counting only the distinct ones).

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

The square root of 16689608 is about 4085.2916664542. The cubic root of 16689608 is about 255.5536247981.

The spelling of 16689608 in words is "sixteen million, six hundred eighty-nine thousand, six hundred eight".