320675543 has 2 divisors, whose sum is σ = 320675544. Its totient is φ = 320675542.

The previous prime is 320675527. The next prime is 320675567. The reversal of 320675543 is 345576023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320675543 - 2⁴ = 320675527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320675513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160337771 + 160337772.

It is an arithmetic number, because the mean of its divisors is an integer number (160337772).

Almost surely, 2^320675543 is an apocalyptic number.

320675543 is a deficient number, since it is larger than the sum of its proper divisors (1).

320675543 is an equidigital number, since it uses as much as digits as its factorization.

320675543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 320675543 is about 17907.4158660595. The cubic root of 320675543 is about 684.4713579857.

The spelling of 320675543 in words is "three hundred twenty million, six hundred seventy-five thousand, five hundred forty-three".