320566601 has 2 divisors, whose sum is σ = 320566602. Its totient is φ = 320566600.

The previous prime is 320566573. The next prime is 320566619. The reversal of 320566601 is 106665023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316662025 + 3904576 = 17795^2 + 1976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320566601 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320566681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160283300 + 160283301.

It is an arithmetic number, because the mean of its divisors is an integer number (160283301).

Almost surely, 2^320566601 is an apocalyptic number.

It is an amenable number.

320566601 is a deficient number, since it is larger than the sum of its proper divisors (1).

320566601 is an equidigital number, since it uses as much as digits as its factorization.

320566601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 320566601 is about 17904.3737952490. The cubic root of 320566601 is about 684.3938381726.

The spelling of 320566601 in words is "three hundred twenty million, five hundred sixty-six thousand, six hundred one".