320764 has 6 divisors (see below), whose sum is σ = 561344. Its totient is φ = 160380.

The previous prime is 320759. The next prime is 320767. The reversal of 320764 is 467023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320767) 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 as a sum of consecutive naturals, namely, 40092 + ... + 40099.

2³²⁰⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

320764 is a deficient number, since it is larger than the sum of its proper divisors (240580).

320764 is a wasteful number, since it uses less digits than its factorization.

320764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80195 (or 80193 counting only the distinct ones).

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

The square root of 320764 is about 566.3603093438. The cubic root of 320764 is about 68.4534288382.

Adding to 320764 its reverse (467023), we get a palindrome (787787).

The spelling of 320764 in words is "three hundred twenty thousand, seven hundred sixty-four".