16697 has 4 divisors (see below), whose sum is σ = 17040. Its totient is φ = 16356.

The previous prime is 16693. The next prime is 16699. The reversal of 16697 is 79661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79661 = 37 ⋅2153.

It is a cyclic number.

It is not a de Polignac number, because 16697 - 2² = 16693 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (16691) 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, 83 + ... + 200.

It is an arithmetic number, because the mean of its divisors is an integer number (4260).

2¹⁶⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

16697 is a deficient number, since it is larger than the sum of its proper divisors (343).

16697 is an equidigital number, since it uses as much as digits as its factorization.

16697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

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

The square root of 16697 is about 129.2168719634. The cubic root of 16697 is about 25.5591348344.

The spelling of 16697 in words is "sixteen thousand, six hundred ninety-seven".