11328661 has 4 divisors (see below), whose sum is σ = 11438752. Its totient is φ = 11218572.

The previous prime is 11328659. The next prime is 11328677. The reversal of 11328661 is 16682311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11328661 - 2¹ = 11328659 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11328631) 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 in 3 ways as a sum of consecutive naturals, for example, 54891 + ... + 55096.

It is an arithmetic number, because the mean of its divisors is an integer number (2859688).

Almost surely, 2^11328661 is an apocalyptic number.

It is an amenable number.

11328661 is a deficient number, since it is larger than the sum of its proper divisors (110091).

11328661 is a wasteful number, since it uses less digits than its factorization.

11328661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110090.

The product of its digits is 1728, while the sum is 28.

The square root of 11328661 is about 3365.8076296782. The cubic root of 11328661 is about 224.5912645242.

The spelling of 11328661 in words is "eleven million, three hundred twenty-eight thousand, six hundred sixty-one".