13666067 has 2 divisors, whose sum is σ = 13666068. Its totient is φ = 13666066.

The previous prime is 13666031. The next prime is 13666069. The reversal of 13666067 is 76066631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13666067 - 2⁸ = 13665811 is a prime.

It is a super-2 number, since 2×13666067² = 373522774496978, which contains 22 as substring.

Together with 13666069, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13666069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6833033 + 6833034.

It is an arithmetic number, because the mean of its divisors is an integer number (6833034).

Almost surely, 2^13666067 is an apocalyptic number.

13666067 is a deficient number, since it is larger than the sum of its proper divisors (1).

13666067 is an equidigital number, since it uses as much as digits as its factorization.

13666067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 13666067 is about 3696.7643960631. The cubic root of 13666067 is about 239.0825330757.

The spelling of 13666067 in words is "thirteen million, six hundred sixty-six thousand, sixty-seven".