11040661 has 2 divisors, whose sum is σ = 11040662. Its totient is φ = 11040660.

The previous prime is 11040647. The next prime is 11040703. The reversal of 11040661 is 16604011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7257636 + 3783025 = 2694^2 + 1945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11040661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11040761) 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, 5520330 + 5520331.

It is an arithmetic number, because the mean of its divisors is an integer number (5520331).

Almost surely, 2^11040661 is an apocalyptic number.

It is an amenable number.

11040661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11040661 is an equidigital number, since it uses as much as digits as its factorization.

11040661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11040661 is about 3322.7490124895. The cubic root of 11040661 is about 222.6717001484.

Adding to 11040661 its reverse (16604011), we get a palindrome (27644672).

The spelling of 11040661 in words is "eleven million, forty thousand, six hundred sixty-one".