264321 has 12 divisors (see below), whose sum is σ = 391248. Its totient is φ = 171864.

The previous prime is 264301. The next prime is 264323. The reversal of 264321 is 123462.

It is a happy number.

264321 is a `hidden beast` number, since 2 + 643 + 21 = 666.

264321 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 264321 - 2⁵ = 264289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264294 and 264303.

It is not an unprimeable number, because it can be changed into a prime (264323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (32604).

2²⁶⁴³²¹ is an apocalyptic number.

It is an amenable number.

264321 is a deficient number, since it is larger than the sum of its proper divisors (126927).

264321 is a wasteful number, since it uses less digits than its factorization.

264321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 729 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 264321 is about 514.1215809514. The cubic root of 264321 is about 64.1766765366.

Adding to 264321 its reverse (123462), we get a palindrome (387783).

It can be divided in two parts, 264 and 321, that added together give a palindrome (585).

The spelling of 264321 in words is "two hundred sixty-four thousand, three hundred twenty-one".