320630017 has 2 divisors, whose sum is σ = 320630018. Its totient is φ = 320630016.

The previous prime is 320629961. The next prime is 320630027. The reversal of 320630017 is 710036023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261662976 + 58967041 = 16176^2 + 7679^2 .

It is a cyclic number.

It is not a de Polignac number, because 320630017 - 2¹⁹ = 320105729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320630017.

It is not a weakly prime, because it can be changed into another prime (320630027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160315008 + 160315009.

It is an arithmetic number, because the mean of its divisors is an integer number (160315009).

Almost surely, 2^320630017 is an apocalyptic number.

It is an amenable number.

320630017 is a deficient number, since it is larger than the sum of its proper divisors (1).

320630017 is an equidigital number, since it uses as much as digits as its factorization.

320630017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 320630017 is about 17906.1446715925. The cubic root of 320630017 is about 684.4389652048.

The spelling of 320630017 in words is "three hundred twenty million, six hundred thirty thousand, seventeen".