163205 has 8 divisors (see below), whose sum is σ = 223872. Its totient is φ = 111888.

The previous prime is 163199. The next prime is 163211. The reversal of 163205 is 502361.

163205 = T₂₅₃ + T₂₅₄ + ... + T₂₅₇.

It is an interprime number because it is at equal distance from previous prime (163199) and next prime (163211).

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

It is a de Polignac number, because none of the positive numbers 2^k-163205 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9 and base 15.

It is a zygodrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297 + ... + 2366.

It is an arithmetic number, because the mean of its divisors is an integer number (27984).

2¹⁶³²⁰⁵ is an apocalyptic number.

It is an amenable number.

163205 is a deficient number, since it is larger than the sum of its proper divisors (60667).

163205 is an equidigital number, since it uses as much as digits as its factorization.

163205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 163205 is about 403.9863859092. The cubic root of 163205 is about 54.6484464033.

Adding to 163205 its reverse (502361), we get a palindrome (665566).

The spelling of 163205 in words is "one hundred sixty-three thousand, two hundred five".