3856667 has 2 divisors, whose sum is σ = 3856668. Its totient is φ = 3856666.

The previous prime is 3856661. The next prime is 3856703. The reversal of 3856667 is 7666583.

It is a weak prime.

It is an emirp because it is prime and its reverse (7666583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3856667 - 2¹⁸ = 3594523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3856661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928333 + 1928334.

It is an arithmetic number, because the mean of its divisors is an integer number (1928334).

Almost surely, 2^3856667 is an apocalyptic number.

3856667 is a deficient number, since it is larger than the sum of its proper divisors (1).

3856667 is an equidigital number, since it uses as much as digits as its factorization.

3856667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 3856667 is about 1963.8398610885. The cubic root of 3856667 is about 156.8209380229.

The spelling of 3856667 in words is "three million, eight hundred fifty-six thousand, six hundred sixty-seven".