16689104 has 20 divisors (see below), whose sum is σ = 34237764. Its totient is φ = 7853568.

The previous prime is 16689103. The next prime is 16689107. The reversal of 16689104 is 40198661.

It can be written as a sum of positive squares in 2 ways, for example, as 14592400 + 2096704 = 3820^2 + 1448^2 .

It is a super-3 number, since 3×16689104³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16689103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30407 + ... + 30950.

Almost surely, 2^16689104 is an apocalyptic number.

It is an amenable number.

16689104 is an abundant number, since it is smaller than the sum of its proper divisors (17548660).

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

16689104 is a wasteful number, since it uses less digits than its factorization.

16689104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61382 (or 61376 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 16689104 is about 4085.2299812862. The cubic root of 16689104 is about 255.5510523326.

The spelling of 16689104 in words is "sixteen million, six hundred eighty-nine thousand, one hundred four".