320975965 has 4 divisors (see below), whose sum is σ = 385171164. Its totient is φ = 256780768.

The previous prime is 320975939. The next prime is 320975969. The reversal of 320975965 is 569579023.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 184226329 + 136749636 = 13573^2 + 11694^2 .

It is a cyclic number.

It is not a de Polignac number, because 320975965 - 2²³ = 312587357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320975969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32097592 + ... + 32097601.

It is an arithmetic number, because the mean of its divisors is an integer number (96292791).

Almost surely, 2^320975965 is an apocalyptic number.

It is an amenable number.

320975965 is a deficient number, since it is larger than the sum of its proper divisors (64195199).

320975965 is an equidigital number, since it uses as much as digits as its factorization.

320975965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64195198.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 320975965 is about 17915.8021031714. The cubic root of 320975965 is about 684.6850382179.

The spelling of 320975965 in words is "three hundred twenty million, nine hundred seventy-five thousand, nine hundred sixty-five".