168265 has 8 divisors (see below), whose sum is σ = 205128. Its totient is φ = 132480.

The previous prime is 168263. The next prime is 168269. The reversal of 168265 is 562861.

It can be written as a sum of positive squares in 4 ways, for example, as 11449 + 156816 = 107^2 + 396^2 .

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

It is not a de Polignac number, because 168265 - 2¹ = 168263 is a prime.

It is a super-2 number, since 2×168265² = 56626220450, which contains 22 as substring.

It is a Duffinian number.

168265 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (25641).

2¹⁶⁸²⁶⁵ is an apocalyptic number.

It is an amenable number.

168265 is a deficient number, since it is larger than the sum of its proper divisors (36863).

168265 is an equidigital number, since it uses as much as digits as its factorization.

168265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its digits is 2880, while the sum is 28.

The square root of 168265 is about 410.2011701592. The cubic root of 168265 is about 55.2074807827.

It can be divided in two parts, 16 and 8265, that added together give a square (8281 = 91²).

The spelling of 168265 in words is "one hundred sixty-eight thousand, two hundred sixty-five".