11661827 has 2 divisors, whose sum is σ = 11661828. Its totient is φ = 11661826.

The previous prime is 11661773. The next prime is 11661829. The reversal of 11661827 is 72816611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11661827 - 2⁸ = 11661571 is a prime.

Together with 11661829, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11661793 and 11661802.

It is not a weakly prime, because it can be changed into another prime (11661829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830913 + 5830914.

It is an arithmetic number, because the mean of its divisors is an integer number (5830914).

Almost surely, 2^11661827 is an apocalyptic number.

11661827 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661827 is an equidigital number, since it uses as much as digits as its factorization.

11661827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 11661827 is about 3414.9417271749. The cubic root of 11661827 is about 226.7717047297.

The spelling of 11661827 in words is "eleven million, six hundred sixty-one thousand, eight hundred twenty-seven".