985597 has 2 divisors, whose sum is σ = 985598. Its totient is φ = 985596.

The previous prime is 985571. The next prime is 985601. The reversal of 985597 is 795589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 933156 + 52441 = 966^2 + 229^2 .

It is an emirp because it is prime and its reverse (795589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985597 - 2¹⁵ = 952829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985547) 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, 492798 + 492799.

It is an arithmetic number, because the mean of its divisors is an integer number (492799).

2⁹⁸⁵⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

985597 is a deficient number, since it is larger than the sum of its proper divisors (1).

985597 is an equidigital number, since it uses as much as digits as its factorization.

985597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 43.

The square root of 985597 is about 992.7723807601. The cubic root of 985597 is about 99.5175764174.

The spelling of 985597 in words is "nine hundred eighty-five thousand, five hundred ninety-seven".