16995 has 16 divisors (see below), whose sum is σ = 29952. Its totient is φ = 8160.

The previous prime is 16993. The next prime is 17011. The reversal of 16995 is 59961.

16995 = T₅₀ + T₅₁ + ... + T₆₀.

It is not a de Polignac number, because 16995 - 2¹ = 16993 is a prime.

16995 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (16993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114 + ... + 216.

It is an arithmetic number, because the mean of its divisors is an integer number (1872).

2¹⁶⁹⁹⁵ is an apocalyptic number.

16995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16995 is a deficient number, since it is larger than the sum of its proper divisors (12957).

16995 is a wasteful number, since it uses less digits than its factorization.

16995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122.

The product of its digits is 2430, while the sum is 30.

The square root of 16995 is about 130.3648725693. The cubic root of 16995 is about 25.7102947951.

It can be divided in two parts, 1 and 6995, that added together give a palindrome (6996).

The spelling of 16995 in words is "sixteen thousand, nine hundred ninety-five".