320066017 has 2 divisors, whose sum is σ = 320066018. Its totient is φ = 320066016.

The previous prime is 320065981. The next prime is 320066023. The reversal of 320066017 is 710660023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179667216 + 140398801 = 13404^2 + 11849^2 .

It is an emirp because it is prime and its reverse (710660023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320066017 - 2²³ = 311677409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320065982 and 320066000.

It is not a weakly prime, because it can be changed into another prime (320066027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160033008 + 160033009.

It is an arithmetic number, because the mean of its divisors is an integer number (160033009).

Almost surely, 2^320066017 is an apocalyptic number.

It is an amenable number.

320066017 is a deficient number, since it is larger than the sum of its proper divisors (1).

320066017 is an equidigital number, since it uses as much as digits as its factorization.

320066017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 320066017 is about 17890.3889560848. The cubic root of 320066017 is about 684.0374118873.

The spelling of 320066017 in words is "three hundred twenty million, sixty-six thousand, seventeen".