320965 has 8 divisors (see below), whose sum is σ = 402048. Its totient is φ = 245520.

The previous prime is 320953. The next prime is 321007. The reversal of 320965 is 569023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320965 - 2¹¹ = 318917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (50256).

2³²⁰⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

320965 is a deficient number, since it is larger than the sum of its proper divisors (81083).

320965 is a wasteful number, since it uses less digits than its factorization.

320965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 320965 is about 566.5377304293. The cubic root of 320965 is about 68.4677241521.

Adding to 320965 its reverse (569023), we get a palindrome (889988).

The spelling of 320965 in words is "three hundred twenty thousand, nine hundred sixty-five".