166895 has 8 divisors (see below), whose sum is σ = 207360. Its totient is φ = 128800.

The previous prime is 166871. The next prime is 166909. The reversal of 166895 is 598661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166895 - 2¹⁶ = 101359 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431 + ... + 720.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2¹⁶⁶⁸⁹⁵ is an apocalyptic number.

166895 is a deficient number, since it is larger than the sum of its proper divisors (40465).

166895 is a wasteful number, since it uses less digits than its factorization.

166895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its digits is 12960, while the sum is 35.

The square root of 166895 is about 408.5278448282. The cubic root of 166895 is about 55.0572406822.

The spelling of 166895 in words is "one hundred sixty-six thousand, eight hundred ninety-five".