320596993 has 2 divisors, whose sum is σ = 320596994. Its totient is φ = 320596992.

The previous prime is 320596979. The next prime is 320597003. The reversal of 320596993 is 399695023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192182769 + 128414224 = 13863^2 + 11332^2 .

It is a cyclic number.

It is not a de Polignac number, because 320596993 - 2⁵ = 320596961 is a prime.

It is not a weakly prime, because it can be changed into another prime (320596093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160298496 + 160298497.

It is an arithmetic number, because the mean of its divisors is an integer number (160298497).

Almost surely, 2^320596993 is an apocalyptic number.

It is an amenable number.

320596993 is a deficient number, since it is larger than the sum of its proper divisors (1).

320596993 is an equidigital number, since it uses as much as digits as its factorization.

320596993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 46.

The square root of 320596993 is about 17905.2225062969. Note that the first 3 decimals coincide. The cubic root of 320596993 is about 684.4154659614.

The spelling of 320596993 in words is "three hundred twenty million, five hundred ninety-six thousand, nine hundred ninety-three".