16689875 has 8 divisors (see below), whose sum is σ = 20829120. Its totient is φ = 13351800.

The previous prime is 16689863. The next prime is 16689887. The reversal of 16689875 is 57898661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16689863) and next prime (16689887).

It is not a de Polignac number, because 16689875 - 2¹⁰ = 16688851 is a prime.

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, 66635 + ... + 66884.

It is an arithmetic number, because the mean of its divisors is an integer number (2603640).

Almost surely, 2^16689875 is an apocalyptic number.

16689875 is a deficient number, since it is larger than the sum of its proper divisors (4139245).

16689875 is an equidigital number, since it uses as much as digits as its factorization.

16689875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133534 (or 133524 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 16689875 is about 4085.3243445288. The cubic root of 16689875 is about 255.5549875714.

The spelling of 16689875 in words is "sixteen million, six hundred eighty-nine thousand, eight hundred seventy-five".