11660811 has 4 divisors (see below), whose sum is σ = 15547752. Its totient is φ = 7773872.

The previous prime is 11660807. The next prime is 11660833. The reversal of 11660811 is 11806611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11660811 - 2² = 11660807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11660911) 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, 1943466 + ... + 1943471.

It is an arithmetic number, because the mean of its divisors is an integer number (3886938).

Almost surely, 2^11660811 is an apocalyptic number.

11660811 is a deficient number, since it is larger than the sum of its proper divisors (3886941).

11660811 is an equidigital number, since it uses as much as digits as its factorization.

11660811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886940.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 11660811 is about 3414.7929659058. The cubic root of 11660811 is about 226.7651189479.

The spelling of 11660811 in words is "eleven million, six hundred sixty thousand, eight hundred eleven".