320120617 has 2 divisors, whose sum is σ = 320120618. Its totient is φ = 320120616.

The previous prime is 320120597. The next prime is 320120651. The reversal of 320120617 is 716021023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199911321 + 120209296 = 14139^2 + 10964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320120617 is a prime.

It is not a weakly prime, because it can be changed into another prime (320120657) 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, 160060308 + 160060309.

It is an arithmetic number, because the mean of its divisors is an integer number (160060309).

Almost surely, 2^320120617 is an apocalyptic number.

It is an amenable number.

320120617 is a deficient number, since it is larger than the sum of its proper divisors (1).

320120617 is an equidigital number, since it uses as much as digits as its factorization.

320120617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 320120617 is about 17891.9148500098. The cubic root of 320120617 is about 684.0763062791.

The spelling of 320120617 in words is "three hundred twenty million, one hundred twenty thousand, six hundred seventeen".