1166213 has 2 divisors, whose sum is σ = 1166214. Its totient is φ = 1166212.

The previous prime is 1166153. The next prime is 1166219. The reversal of 1166213 is 3126611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1151329 + 14884 = 1073^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166213 - 2¹⁰ = 1165189 is a prime.

It is a super-3 number, since 3×1166213³ = 4758333632983276791, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583106 + 583107.

It is an arithmetic number, because the mean of its divisors is an integer number (583107).

2^1166213 is an apocalyptic number.

It is an amenable number.

1166213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166213 is an equidigital number, since it uses as much as digits as its factorization.

1166213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

The square root of 1166213 is about 1079.9134224557. The cubic root of 1166213 is about 105.2590128499.

The spelling of 1166213 in words is "one million, one hundred sixty-six thousand, two hundred thirteen".