320775073 has 6 divisors (see below), whose sum is σ = 331457442. Its totient is φ = 310426560.

The previous prime is 320775053. The next prime is 320775083. The reversal of 320775073 is 370577023.

It can be written as a sum of positive squares in only one way, i.e., 288592144 + 32182929 = 16988^2 + 5673^2 .

It is not a de Polignac number, because 320775073 - 2¹³ = 320766881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320775053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165936 + ... + 167857.

It is an arithmetic number, because the mean of its divisors is an integer number (55242907).

Almost surely, 2^320775073 is an apocalyptic number.

It is an amenable number.

320775073 is a deficient number, since it is larger than the sum of its proper divisors (10682369).

320775073 is an equidigital number, since it uses as much as digits as its factorization.

320775073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333855 (or 333824 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 34.

The square root of 320775073 is about 17910.1946667254. The cubic root of 320775073 is about 684.5421651601.

The spelling of 320775073 in words is "three hundred twenty million, seven hundred seventy-five thousand, seventy-three".