320066 has 4 divisors (see below), whose sum is σ = 480102. Its totient is φ = 160032.

The previous prime is 320063. The next prime is 320081. The reversal of 320066 is 660023.

320066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 319225 + 841 = 565^2 + 29^2 .

320066 is a modest number, since divided by 66 gives 32 as remainder.

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 320066.

It is not an unprimeable number, because it can be changed into a prime (320063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80015 + ... + 80018.

2³²⁰⁰⁶⁶ is an apocalyptic number.

320066 is a deficient number, since it is larger than the sum of its proper divisors (160036).

320066 is a wasteful number, since it uses less digits than its factorization.

320066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160035.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 320066 is about 565.7437582510. The cubic root of 320066 is about 68.4037399777.

Adding to 320066 its reverse (660023), we get a palindrome (980089).

The spelling of 320066 in words is "three hundred twenty thousand, sixty-six".