163329 has 4 divisors (see below), whose sum is σ = 217776. Its totient is φ = 108884.

The previous prime is 163327. The next prime is 163337. The reversal of 163329 is 923361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163329 - 2¹ = 163327 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163299 and 163308.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 163329.

It is not an unprimeable number, because it can be changed into a prime (163321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27219 + ... + 27224.

It is an arithmetic number, because the mean of its divisors is an integer number (54444).

It is a Proth number, since it is equal to 319 ⋅ 2⁹ + 1 and 319 < 2⁹.

2¹⁶³³²⁹ is an apocalyptic number.

It is an amenable number.

163329 is a deficient number, since it is larger than the sum of its proper divisors (54447).

163329 is an equidigital number, since it uses as much as digits as its factorization.

163329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54446.

The product of its digits is 972, while the sum is 24.

The square root of 163329 is about 404.1398272875. The cubic root of 163329 is about 54.6622831768.

The spelling of 163329 in words is "one hundred sixty-three thousand, three hundred twenty-nine".