1166597 has 2 divisors, whose sum is σ = 1166598. Its totient is φ = 1166596.

The previous prime is 1166579. The next prime is 1166603. The reversal of 1166597 is 7956611.

Together with previous prime (1166579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 516961 = 806^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166597 - 2⁶ = 1166533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583298 + 583299.

It is an arithmetic number, because the mean of its divisors is an integer number (583299).

2^1166597 is an apocalyptic number.

It is an amenable number.

1166597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166597 is an equidigital number, since it uses as much as digits as its factorization.

1166597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 1166597 is about 1080.0911998530. The cubic root of 1166597 is about 105.2705644920.

The spelling of 1166597 in words is "one million, one hundred sixty-six thousand, five hundred ninety-seven".