16594 has 4 divisors (see below), whose sum is σ = 24894. Its totient is φ = 8296.

The previous prime is 16573. The next prime is 16603. The reversal of 16594 is 49561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49561 = 29 ⋅1709.

It can be written as a sum of positive squares in only one way, i.e., 9025 + 7569 = 95^2 + 87^2 .

It is a plaindrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4147 + ... + 4150.

2¹⁶⁵⁹⁴ is an apocalyptic number.

16594 is a deficient number, since it is larger than the sum of its proper divisors (8300).

16594 is an equidigital number, since it uses as much as digits as its factorization.

16594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8299.

The product of its digits is 1080, while the sum is 25.

The square root of 16594 is about 128.8177006471. The cubic root of 16594 is about 25.5064702279.

The spelling of 16594 in words is "sixteen thousand, five hundred ninety-four".