11068721 has 2 divisors, whose sum is σ = 11068722. Its totient is φ = 11068720.

The previous prime is 11068711. The next prime is 11068741. The reversal of 11068721 is 12786011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 577600 = 3239^2 + 760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11068721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11068711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5534360 + 5534361.

It is an arithmetic number, because the mean of its divisors is an integer number (5534361).

Almost surely, 2^11068721 is an apocalyptic number.

It is an amenable number.

11068721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11068721 is an equidigital number, since it uses as much as digits as its factorization.

11068721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 11068721 is about 3326.9687404603. The cubic root of 11068721 is about 222.8601816803.

The spelling of 11068721 in words is "eleven million, sixty-eight thousand, seven hundred twenty-one".