260321 has 4 divisors (see below), whose sum is σ = 275652. Its totient is φ = 244992.

The previous prime is 260317. The next prime is 260329. The reversal of 260321 is 123062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70225 + 190096 = 265^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 260321 - 2² = 260317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 260296 and 260305.

It is not an unprimeable number, because it can be changed into a prime (260329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7640 + ... + 7673.

It is an arithmetic number, because the mean of its divisors is an integer number (68913).

2²⁶⁰³²¹ is an apocalyptic number.

It is an amenable number.

260321 is a deficient number, since it is larger than the sum of its proper divisors (15331).

260321 is a wasteful number, since it uses less digits than its factorization.

260321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15330.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 260321 is about 510.2166206622. The cubic root of 260321 is about 63.8512986463.

Adding to 260321 its reverse (123062), we get a palindrome (383383).

The spelling of 260321 in words is "two hundred sixty thousand, three hundred twenty-one".