163671 has 8 divisors (see below), whose sum is σ = 221040. Its totient is φ = 107712.

The previous prime is 163661. The next prime is 163673. The reversal of 163671 is 176361.

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

It is not a de Polignac number, because 163671 - 2⁷ = 163543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (27630).

2¹⁶³⁶⁷¹ is an apocalyptic number.

163671 is a deficient number, since it is larger than the sum of its proper divisors (57369).

163671 is an equidigital number, since it uses as much as digits as its factorization.

163671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its digits is 756, while the sum is 24.

The square root of 163671 is about 404.5627269040. The cubic root of 163671 is about 54.7004096326.

The spelling of 163671 in words is "one hundred sixty-three thousand, six hundred seventy-one".