11816611 has 4 divisors (see below), whose sum is σ = 12197824. Its totient is φ = 11435400.

The previous prime is 11816591. The next prime is 11816647. The reversal of 11816611 is 11661811.

11816611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11661811 = 7 ⋅1665973.

It is a cyclic number.

It is not a de Polignac number, because 11816611 - 2¹¹ = 11814563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11816671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190560 + ... + 190621.

It is an arithmetic number, because the mean of its divisors is an integer number (3049456).

Almost surely, 2^11816611 is an apocalyptic number.

11816611 is a deficient number, since it is larger than the sum of its proper divisors (381213).

11816611 is an equidigital number, since it uses as much as digits as its factorization.

11816611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381212.

The product of its digits is 288, while the sum is 25.

The square root of 11816611 is about 3437.5297816892. The cubic root of 11816611 is about 227.7705897571.

The spelling of 11816611 in words is "eleven million, eight hundred sixteen thousand, six hundred eleven".