168081 has 8 divisors (see below), whose sum is σ = 226080. Its totient is φ = 111072.

The previous prime is 168071. The next prime is 168083. The reversal of 168081 is 180861.

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

It is not a de Polignac number, because 168081 - 2⁷ = 167953 is a prime.

It is a super-2 number, since 2×168081² = 56502445122, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 168081.

It is not an unprimeable number, because it can be changed into a prime (168083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381 + ... + 693.

It is an arithmetic number, because the mean of its divisors is an integer number (28260).

2¹⁶⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

168081 is a deficient number, since it is larger than the sum of its proper divisors (57999).

168081 is a wasteful number, since it uses less digits than its factorization.

168081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 168081 is about 409.9768286135. The cubic root of 168081 is about 55.1873500734.

The spelling of 168081 in words is "one hundred sixty-eight thousand, eighty-one".