166071 has 8 divisors (see below), whose sum is σ = 223344. Its totient is φ = 109760.

The previous prime is 166063. The next prime is 166081. The reversal of 166071 is 170661.

166071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 166071 - 2³ = 166063 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166071.

It is not an unprimeable number, because it can be changed into a prime (166021) 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, 451 + ... + 731.

It is an arithmetic number, because the mean of its divisors is an integer number (27918).

2¹⁶⁶⁰⁷¹ is an apocalyptic number.

166071 is a deficient number, since it is larger than the sum of its proper divisors (57273).

166071 is a wasteful number, since it uses less digits than its factorization.

166071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 166071 is about 407.5180977576. The cubic root of 166071 is about 54.9664809538.

The spelling of 166071 in words is "one hundred sixty-six thousand, seventy-one".