159697 has 2 divisors, whose sum is σ = 159698. Its totient is φ = 159696.

The previous prime is 159683. The next prime is 159701. The reversal of 159697 is 796951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83521 + 76176 = 289^2 + 276^2 .

It is an emirp because it is prime and its reverse (796951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159697 - 2⁷ = 159569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79848 + 79849.

It is an arithmetic number, because the mean of its divisors is an integer number (79849).

2¹⁵⁹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

159697 is a deficient number, since it is larger than the sum of its proper divisors (1).

159697 is an equidigital number, since it uses as much as digits as its factorization.

159697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 159697 is about 399.6210705156. The cubic root of 159697 is about 54.2540611541.

The spelling of 159697 in words is "one hundred fifty-nine thousand, six hundred ninety-seven".