268321 has 4 divisors (see below), whose sum is σ = 270000. Its totient is φ = 266644.

The previous prime is 268297. The next prime is 268343. The reversal of 268321 is 123862.

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 268321 - 2¹⁵ = 235553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268292 and 268301.

It is not an unprimeable number, because it can be changed into a prime (268721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571 + ... + 928.

It is an arithmetic number, because the mean of its divisors is an integer number (67500).

268321 is a Friedman number, since it can be written as (8^(2+1)+6)^2-3, using all its digits and the basic arithmetic operations.

2²⁶⁸³²¹ is an apocalyptic number.

It is an amenable number.

268321 is a deficient number, since it is larger than the sum of its proper divisors (1679).

268321 is a wasteful number, since it uses less digits than its factorization.

268321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678.

The product of its digits is 576, while the sum is 22.

The square root of 268321 is about 517.9971042390. The cubic root of 268321 is about 64.4987881110.

It can be divided in two parts, 2683 and 21, that added together give a square (2704 = 52²).

The spelling of 268321 in words is "two hundred sixty-eight thousand, three hundred twenty-one".