845321 has 8 divisors (see below), whose sum is σ = 886080. Its totient is φ = 805392.

The previous prime is 845309. The next prime is 845333. The reversal of 845321 is 123548.

It is an interprime number because it is at equal distance from previous prime (845309) and next prime (845333).

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

It is a cyclic number.

It is not a de Polignac number, because 845321 - 2¹⁰ = 844297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845321.

It is not an unprimeable number, because it can be changed into a prime (845371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846 + ... + 3128.

It is an arithmetic number, because the mean of its divisors is an integer number (110760).

2⁸⁴⁵³²¹ is an apocalyptic number.

It is an amenable number.

845321 is a deficient number, since it is larger than the sum of its proper divisors (40759).

845321 is a wasteful number, since it uses less digits than its factorization.

845321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its digits is 960, while the sum is 23.

The square root of 845321 is about 919.4133999459. The cubic root of 845321 is about 94.5526893726.

Adding to 845321 its reverse (123548), we get a palindrome (968869).

The spelling of 845321 in words is "eight hundred forty-five thousand, three hundred twenty-one".