162166 has 4 divisors (see below), whose sum is σ = 243252. Its totient is φ = 81082.

The previous prime is 162143. The next prime is 162209. The reversal of 162166 is 661261.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 162166 parts by 569 straight cuts.

It is a congruent number.

It is an unprimeable number.

162166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 40540 + ... + 40543.

It is an arithmetic number, because the mean of its divisors is an integer number (60813).

2¹⁶²¹⁶⁶ is an apocalyptic number.

162166 is a deficient number, since it is larger than the sum of its proper divisors (81086).

162166 is an equidigital number, since it uses as much as digits as its factorization.

162166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81085.

The product of its digits is 432, while the sum is 22.

The square root of 162166 is about 402.6983983082. The cubic root of 162166 is about 54.5322313064.

The spelling of 162166 in words is "one hundred sixty-two thousand, one hundred sixty-six".