166995 has 16 divisors (see below), whose sum is σ = 297120. Its totient is φ = 88992.

The previous prime is 166987. The next prime is 167009. The reversal of 166995 is 599661.

It is not a de Polignac number, because 166995 - 2³ = 166987 is a prime.

166995 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484 + ... + 753.

It is an arithmetic number, because the mean of its divisors is an integer number (18570).

2¹⁶⁶⁹⁹⁵ is an apocalyptic number.

166995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166995 is a deficient number, since it is larger than the sum of its proper divisors (130125).

166995 is a wasteful number, since it uses less digits than its factorization.

166995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1245 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 166995 is about 408.6502171785. The cubic root of 166995 is about 55.0682348697.

It can be divided in two parts, 1669 and 95, that added together give a square (1764 = 42²).

The spelling of 166995 in words is "one hundred sixty-six thousand, nine hundred ninety-five".