11566843 has 2 divisors, whose sum is σ = 11566844. Its totient is φ = 11566842.

The previous prime is 11566837. The next prime is 11566847. The reversal of 11566843 is 34866511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34866511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11566843 - 2⁵ = 11566811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11566799 and 11566808.

It is not a weakly prime, because it can be changed into another prime (11566847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5783421 + 5783422.

It is an arithmetic number, because the mean of its divisors is an integer number (5783422).

Almost surely, 2^11566843 is an apocalyptic number.

11566843 is a deficient number, since it is larger than the sum of its proper divisors (1).

11566843 is an equidigital number, since it uses as much as digits as its factorization.

11566843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 11566843 is about 3401.0061746489. The cubic root of 11566843 is about 226.1543506641.

The spelling of 11566843 in words is "eleven million, five hundred sixty-six thousand, eight hundred forty-three".