166395 has 8 divisors (see below), whose sum is σ = 266256. Its totient is φ = 88736.

The previous prime is 166393. The next prime is 166399. The reversal of 166395 is 593661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166395 - 2¹ = 166393 is a prime.

166395 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (166393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532 + ... + 5561.

It is an arithmetic number, because the mean of its divisors is an integer number (33282).

2¹⁶⁶³⁹⁵ is an apocalyptic number.

166395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166395 is a deficient number, since it is larger than the sum of its proper divisors (99861).

166395 is a wasteful number, since it uses less digits than its factorization.

166395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101.

The product of its digits is 4860, while the sum is 30.

The square root of 166395 is about 407.9154324122. The cubic root of 166395 is about 55.0022037684.

It can be divided in two parts, 166 and 395, that added together give a triangular number (561 = T₃₃).

The spelling of 166395 in words is "one hundred sixty-six thousand, three hundred ninety-five".