11666113 has 2 divisors, whose sum is σ = 11666114. Its totient is φ = 11666112.

The previous prime is 11666111. The next prime is 11666117. The reversal of 11666113 is 31166611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 153664 = 3393^2 + 392^2 .

It is a cyclic number.

It is not a de Polignac number, because 11666113 - 2¹ = 11666111 is a prime.

Together with 11666111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11666111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833056 + 5833057.

It is an arithmetic number, because the mean of its divisors is an integer number (5833057).

Almost surely, 2^11666113 is an apocalyptic number.

It is an amenable number.

11666113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666113 is an equidigital number, since it uses as much as digits as its factorization.

11666113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 11666113 is about 3415.5692058572. The cubic root of 11666113 is about 226.7994826664.

The spelling of 11666113 in words is "eleven million, six hundred sixty-six thousand, one hundred thirteen".