67321 has 4 divisors (see below), whose sum is σ = 70272. Its totient is φ = 64372.

The previous prime is 67307. The next prime is 67339. The reversal of 67321 is 12376.

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 67321 - 2⁵ = 67289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1441 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (17568).

2⁶⁷³²¹ is an apocalyptic number.

It is an amenable number.

67321 is a deficient number, since it is larger than the sum of its proper divisors (2951).

67321 is a wasteful number, since it uses less digits than its factorization.

67321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950.

The product of its digits is 252, while the sum is 19.

The square root of 67321 is about 259.4629067902. The cubic root of 67321 is about 40.6802412206.

Adding to 67321 its reverse (12376), we get a palindrome (79697).

Subtracting from 67321 its reverse (12376), we obtain a palindrome (54945).

The spelling of 67321 in words is "sixty-seven thousand, three hundred twenty-one".