161166 has 8 divisors (see below), whose sum is σ = 322344. Its totient is φ = 53720.

The previous prime is 161159. The next prime is 161167. The reversal of 161166 is 661161.

161166 is nontrivially palindromic in base 13.

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

161166 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161167) by changing a digit.

161166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13425 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (40293).

2¹⁶¹¹⁶⁶ is an apocalyptic number.

161166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161166 is a wasteful number, since it uses less digits than its factorization.

161166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26866.

The product of its digits is 216, while the sum is 21.

The square root of 161166 is about 401.4548542489. The cubic root of 161166 is about 54.4199087310.

The spelling of 161166 in words is "one hundred sixty-one thousand, one hundred sixty-six".