320746 has 4 divisors (see below), whose sum is σ = 481122. Its totient is φ = 160372.

The previous prime is 320741. The next prime is 320759. The reversal of 320746 is 647023.

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 + 1521 = 565^2 + 39^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (320741) by changing a digit.

320746 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 as a sum of consecutive naturals, namely, 80185 + ... + 80188.

2³²⁰⁷⁴⁶ is an apocalyptic number.

320746 is a deficient number, since it is larger than the sum of its proper divisors (160376).

320746 is a wasteful number, since it uses less digits than its factorization.

320746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160375.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 320746 is about 566.3444181768. The cubic root of 320746 is about 68.4521483695.

Adding to 320746 its reverse (647023), we get a palindrome (967769).

The spelling of 320746 in words is "three hundred twenty thousand, seven hundred forty-six".