163775 has 6 divisors (see below), whose sum is σ = 203112. Its totient is φ = 131000.

The previous prime is 163771. The next prime is 163781. The reversal of 163775 is 577361.

It is not a de Polignac number, because 163775 - 2² = 163771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3251 + ... + 3300.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2¹⁶³⁷⁷⁵ is an apocalyptic number.

163775 is a deficient number, since it is larger than the sum of its proper divisors (39337).

163775 is an equidigital number, since it uses as much as digits as its factorization.

163775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561 (or 6556 counting only the distinct ones).

The product of its digits is 4410, while the sum is 29.

The square root of 163775 is about 404.6912403302. The cubic root of 163775 is about 54.7119931102.

The spelling of 163775 in words is "one hundred sixty-three thousand, seven hundred seventy-five".