320545567 has 2 divisors, whose sum is σ = 320545568. Its totient is φ = 320545566.

The previous prime is 320545553. The next prime is 320545573. The reversal of 320545567 is 765545023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320545567 - 2²⁷ = 186327839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320545597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160272783 + 160272784.

It is an arithmetic number, because the mean of its divisors is an integer number (160272784).

Almost surely, 2^320545567 is an apocalyptic number.

320545567 is a deficient number, since it is larger than the sum of its proper divisors (1).

320545567 is an equidigital number, since it uses as much as digits as its factorization.

320545567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 320545567 is about 17903.7863872422. The cubic root of 320545567 is about 684.3788689953.

The spelling of 320545567 in words is "three hundred twenty million, five hundred forty-five thousand, five hundred sixty-seven".