320847 has 4 divisors (see below), whose sum is σ = 427800. Its totient is φ = 213896.

The previous prime is 320843. The next prime is 320851. The reversal of 320847 is 748023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748023 = 3 ⋅249341.

It is an interprime number because it is at equal distance from previous prime (320843) and next prime (320851).

It is a cyclic number.

It is not a de Polignac number, because 320847 - 2² = 320843 is a prime.

It is a D-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 320847.

It is not an unprimeable number, because it can be changed into a prime (320843) 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, 53472 + ... + 53477.

It is an arithmetic number, because the mean of its divisors is an integer number (106950).

2³²⁰⁸⁴⁷ is an apocalyptic number.

320847 is a deficient number, since it is larger than the sum of its proper divisors (106953).

320847 is a wasteful number, since it uses less digits than its factorization.

320847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106952.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 320847 is about 566.4335795131. The cubic root of 320847 is about 68.4593326019.

The spelling of 320847 in words is "three hundred twenty thousand, eight hundred forty-seven".