1126661 has 2 divisors, whose sum is σ = 1126662. Its totient is φ = 1126660.

The previous prime is 1126649. The next prime is 1126663. The reversal of 1126661 is 1666211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 185761 = 970^2 + 431^2 .

It is an emirp because it is prime and its reverse (1666211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1126661 - 2⁶ = 1126597 is a prime.

It is a Sophie Germain prime.

Together with 1126663, it forms a pair of twin primes.

It is a Chen 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 (1126663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563330 + 563331.

It is an arithmetic number, because the mean of its divisors is an integer number (563331).

2^1126661 is an apocalyptic number.

It is an amenable number.

1126661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126661 is an equidigital number, since it uses as much as digits as its factorization.

1126661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 1126661 is about 1061.4428858869. The cubic root of 1126661 is about 104.0553514525.

The spelling of 1126661 in words is "one million, one hundred twenty-six thousand, six hundred sixty-one".