166065 has 8 divisors (see below), whose sum is σ = 265728. Its totient is φ = 88560.

The previous prime is 166063. The next prime is 166081. The reversal of 166065 is 560661.

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

It is not a de Polignac number, because 166065 - 2¹ = 166063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5521 + ... + 5550.

It is an arithmetic number, because the mean of its divisors is an integer number (33216).

2¹⁶⁶⁰⁶⁵ is an apocalyptic number.

166065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166065 is a deficient number, since it is larger than the sum of its proper divisors (99663).

166065 is a wasteful number, since it uses less digits than its factorization.

166065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11079.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 166065 is about 407.5107360549. The cubic root of 166065 is about 54.9658189822.

It can be divided in two parts, 1 and 66065, that added together give a palindrome (66066).

The spelling of 166065 in words is "one hundred sixty-six thousand, sixty-five".