3861587 has 2 divisors, whose sum is σ = 3861588. Its totient is φ = 3861586.

The previous prime is 3861581. The next prime is 3861589. The reversal of 3861587 is 7851683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3861587 - 2²⁰ = 2813011 is a prime.

Together with 3861589, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3861587.

It is not a weakly prime, because it can be changed into another prime (3861581) 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, 1930793 + 1930794.

It is an arithmetic number, because the mean of its divisors is an integer number (1930794).

Almost surely, 2^3861587 is an apocalyptic number.

3861587 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861587 is an equidigital number, since it uses as much as digits as its factorization.

3861587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 3861587 is about 1965.0921098005. The cubic root of 3861587 is about 156.8875958522.

The spelling of 3861587 in words is "three million, eight hundred sixty-one thousand, five hundred eighty-seven".