16689075 has 24 divisors (see below), whose sum is σ = 29716848. Its totient is φ = 8215680.

The previous prime is 16689073. The next prime is 16689077. The reversal of 16689075 is 57098661.

It is an interprime number because it is at equal distance from previous prime (16689073) and next prime (16689077).

It is not a de Polignac number, because 16689075 - 2¹ = 16689073 is a prime.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 7584 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (1238202).

Almost surely, 2^16689075 is an apocalyptic number.

16689075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16689075 is a deficient number, since it is larger than the sum of its proper divisors (13027773).

16689075 is a wasteful number, since it uses less digits than its factorization.

16689075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17143 (or 17138 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 16689075 is about 4085.2264319129. The cubic root of 16689075 is about 255.5509043122.

The spelling of 16689075 in words is "sixteen million, six hundred eighty-nine thousand, seventy-five".