16679 has 4 divisors (see below), whose sum is σ = 17976. Its totient is φ = 15384.

The previous prime is 16673. The next prime is 16691. The reversal of 16679 is 97661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97661 = 61 ⋅1601.

It is a cyclic number.

It is not a de Polignac number, because 16679 - 2¹² = 12583 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629 + ... + 654.

It is an arithmetic number, because the mean of its divisors is an integer number (4494).

2¹⁶⁶⁷⁹ is an apocalyptic number.

16679 is a deficient number, since it is larger than the sum of its proper divisors (1297).

16679 is a wasteful number, since it uses less digits than its factorization.

16679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its digits is 2268, while the sum is 29.

The square root of 16679 is about 129.1472028346. The cubic root of 16679 is about 25.5499469593.

The spelling of 16679 in words is "sixteen thousand, six hundred seventy-nine".