7985321 has 4 divisors (see below), whose sum is σ = 8242944. Its totient is φ = 7727700.

The previous prime is 7985311. The next prime is 7985323. The reversal of 7985321 is 1235897.

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 a de Polignac number, because none of the positive numbers 2^k-7985321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7985323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128765 + ... + 128826.

It is an arithmetic number, because the mean of its divisors is an integer number (2060736).

Almost surely, 2^7985321 is an apocalyptic number.

It is an amenable number.

7985321 is a deficient number, since it is larger than the sum of its proper divisors (257623).

7985321 is a wasteful number, since it uses less digits than its factorization.

7985321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257622.

The product of its digits is 15120, while the sum is 35.

The square root of 7985321 is about 2825.8310282110. The cubic root of 7985321 is about 199.8776001066.

The spelling of 7985321 in words is "seven million, nine hundred eighty-five thousand, three hundred twenty-one".