320766 has 16 divisors (see below), whose sum is σ = 647184. Its totient is φ = 105984.

The previous prime is 320759. The next prime is 320767. The reversal of 320766 is 667023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320767) by changing a digit.

320766 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (40449).

2³²⁰⁷⁶⁶ is an apocalyptic number.

320766 is an abundant number, since it is smaller than the sum of its proper divisors (326418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320766 is a wasteful number, since it uses less digits than its factorization.

320766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 320766 is about 566.3620750015. The cubic root of 320766 is about 68.4535711095.

Adding to 320766 its reverse (667023), we get a palindrome (987789).

The spelling of 320766 in words is "three hundred twenty thousand, seven hundred sixty-six".