11066561 has 8 divisors (see below), whose sum is σ = 12102048. Its totient is φ = 10036000.

The previous prime is 11066543. The next prime is 11066563. The reversal of 11066561 is 16566011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11066561 - 2¹⁴ = 11050177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11066561.

It is not an unprimeable number, because it can be changed into a prime (11066563) 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 in 7 ways as a sum of consecutive naturals, for example, 4766 + ... + 6696.

It is an arithmetic number, because the mean of its divisors is an integer number (1512756).

Almost surely, 2^11066561 is an apocalyptic number.

11066561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11066561 is a deficient number, since it is larger than the sum of its proper divisors (1035487).

11066561 is a wasteful number, since it uses less digits than its factorization.

11066561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463.

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

The square root of 11066561 is about 3326.6441047999. The cubic root of 11066561 is about 222.8456840912.

It can be divided in two parts, 11066 and 561, that multiplied together give a palindrome (6208026).

The spelling of 11066561 in words is "eleven million, sixty-six thousand, five hundred sixty-one".