11005649 has 2 divisors, whose sum is σ = 11005650. Its totient is φ = 11005648.

The previous prime is 11005637. The next prime is 11005669. The reversal of 11005649 is 94650011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 2155024 = 2975^2 + 1468^2 .

It is an emirp because it is prime and its reverse (94650011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11005649 - 2⁴ = 11005633 is a prime.

It is a super-2 number, since 2×11005649² = 242248619822402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11005619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502824 + 5502825.

It is an arithmetic number, because the mean of its divisors is an integer number (5502825).

Almost surely, 2^11005649 is an apocalyptic number.

It is an amenable number.

11005649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11005649 is an equidigital number, since it uses as much as digits as its factorization.

11005649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 11005649 is about 3317.4762998400. The cubic root of 11005649 is about 222.4360730374.

The spelling of 11005649 in words is "eleven million, five thousand, six hundred forty-nine".