16689003 has 8 divisors (see below), whose sum is σ = 22299648. Its totient is φ = 11102184.

The previous prime is 16688999. The next prime is 16689061. The reversal of 16689003 is 30098661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16689003 - 2² = 16688999 is a prime.

It is a super-2 number, since 2×16689003² = 557045642268018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16689073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4251 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (2787456).

Almost surely, 2^16689003 is an apocalyptic number.

16689003 is a deficient number, since it is larger than the sum of its proper divisors (5610645).

16689003 is a wasteful number, since it uses less digits than its factorization.

16689003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11913.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16689003 is about 4085.2176196624. The cubic root of 16689003 is about 255.5505368125.

The spelling of 16689003 in words is "sixteen million, six hundred eighty-nine thousand, three".