1166287 has 2 divisors, whose sum is σ = 1166288. Its totient is φ = 1166286.

The previous prime is 1166237. The next prime is 1166311. The reversal of 1166287 is 7826611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166287 - 2¹⁵ = 1133519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166227) 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, 583143 + 583144.

It is an arithmetic number, because the mean of its divisors is an integer number (583144).

2^1166287 is an apocalyptic number.

1166287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166287 is an equidigital number, since it uses as much as digits as its factorization.

1166287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 1166287 is about 1079.9476839181. The cubic root of 1166287 is about 105.2612391448.

The spelling of 1166287 in words is "one million, one hundred sixty-six thousand, two hundred eighty-seven".