16546 has 4 divisors (see below), whose sum is σ = 24822. Its totient is φ = 8272.

The previous prime is 16529. The next prime is 16547. The reversal of 16546 is 64561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12321 + 4225 = 111^2 + 65^2 .

It is a Smith number, since the sum of its digits (22) 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 (16547) by changing a digit.

16546 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135 + ... + 4138.

2¹⁶⁵⁴⁶ is an apocalyptic number.

16546 is a deficient number, since it is larger than the sum of its proper divisors (8276).

16546 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 7 representation: 16546 = (66145)₇.

16546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275.

The product of its digits is 720, while the sum is 22.

The square root of 16546 is about 128.6312559217. The cubic root of 16546 is about 25.4818530379.

The spelling of 16546 in words is "sixteen thousand, five hundred forty-six".