320568245 has 4 divisors (see below), whose sum is σ = 384681900. Its totient is φ = 256454592.

The previous prime is 320568197. The next prime is 320568251. The reversal of 320568245 is 542865023.

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 255168676 + 65399569 = 15974^2 + 8087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320568245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32056820 + ... + 32056829.

It is an arithmetic number, because the mean of its divisors is an integer number (96170475).

Almost surely, 2^320568245 is an apocalyptic number.

It is an amenable number.

320568245 is a deficient number, since it is larger than the sum of its proper divisors (64113655).

320568245 is an equidigital number, since it uses as much as digits as its factorization.

320568245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64113654.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 320568245 is about 17904.4197057598. The cubic root of 320568245 is about 684.3950081235.

The spelling of 320568245 in words is "three hundred twenty million, five hundred sixty-eight thousand, two hundred forty-five".