986597 has 2 divisors, whose sum is σ = 986598. Its totient is φ = 986596.

The previous prime is 986593. The next prime is 986599. The reversal of 986597 is 795689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 201601 = 886^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 986597 - 2² = 986593 is a prime.

Together with 986599, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493298 + 493299.

It is an arithmetic number, because the mean of its divisors is an integer number (493299).

2⁹⁸⁶⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

986597 is a deficient number, since it is larger than the sum of its proper divisors (1).

986597 is an equidigital number, since it uses as much as digits as its factorization.

986597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 986597 is about 993.2758931938. The cubic root of 986597 is about 99.5512223322.

The spelling of 986597 in words is "nine hundred eighty-six thousand, five hundred ninety-seven".