320706697 has 2 divisors, whose sum is σ = 320706698. Its totient is φ = 320706696.

The previous prime is 320706571. The next prime is 320706703. The reversal of 320706697 is 796607023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278923401 + 41783296 = 16701^2 + 6464^2 .

It is a cyclic number.

It is not a de Polignac number, because 320706697 - 2¹⁵ = 320673929 is a prime.

It is not a weakly prime, because it can be changed into another prime (320706497) 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, 160353348 + 160353349.

It is an arithmetic number, because the mean of its divisors is an integer number (160353349).

Almost surely, 2^320706697 is an apocalyptic number.

It is an amenable number.

320706697 is a deficient number, since it is larger than the sum of its proper divisors (1).

320706697 is an equidigital number, since it uses as much as digits as its factorization.

320706697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 320706697 is about 17908.2857080180. The cubic root of 320706697 is about 684.4935229961.

The spelling of 320706697 in words is "three hundred twenty million, seven hundred six thousand, six hundred ninety-seven".