3866867 has 2 divisors, whose sum is σ = 3866868. Its totient is φ = 3866866.

The previous prime is 3866857. The next prime is 3866869. The reversal of 3866867 is 7686683.

3866867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3866867 - 2¹⁶ = 3801331 is a prime.

Together with 3866869, 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 (3866869) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933433 + 1933434.

It is an arithmetic number, because the mean of its divisors is an integer number (1933434).

Almost surely, 2^3866867 is an apocalyptic number.

3866867 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866867 is an equidigital number, since it uses as much as digits as its factorization.

3866867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 3866867 is about 1966.4350993613. The cubic root of 3866867 is about 156.9590681292.

The spelling of 3866867 in words is "three million, eight hundred sixty-six thousand, eight hundred sixty-seven".