11666867 has 2 divisors, whose sum is σ = 11666868. Its totient is φ = 11666866.

The previous prime is 11666861. The next prime is 11666873. The reversal of 11666867 is 76866611.

It is a balanced prime because it is at equal distance from previous prime (11666861) and next prime (11666873).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11666867 is a prime.

It is a super-2 number, since 2×11666867² = 272231571191378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11666861) 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, 5833433 + 5833434.

It is an arithmetic number, because the mean of its divisors is an integer number (5833434).

Almost surely, 2^11666867 is an apocalyptic number.

11666867 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666867 is an equidigital number, since it uses as much as digits as its factorization.

11666867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 11666867 is about 3415.6795809912. The cubic root of 11666867 is about 226.8043687019.

The spelling of 11666867 in words is "eleven million, six hundred sixty-six thousand, eight hundred sixty-seven".