16997589 has 24 divisors (see below), whose sum is σ = 28525952. Its totient is φ = 9551520.

The previous prime is 16997557. The next prime is 16997623. The reversal of 16997589 is 98579961.

It is not a de Polignac number, because 16997589 - 2⁵ = 16997557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16997549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1632 + ... + 6054.

Almost surely, 2^16997589 is an apocalyptic number.

It is an amenable number.

16997589 is a deficient number, since it is larger than the sum of its proper divisors (11528363).

16997589 is a wasteful number, since it uses less digits than its factorization.

16997589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497 (or 4494 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 16997589 is about 4122.8132385545. The cubic root of 16997589 is about 257.1160028835.

The spelling of 16997589 in words is "sixteen million, nine hundred ninety-seven thousand, five hundred eighty-nine".