3866587 has 4 divisors (see below), whose sum is σ = 3960936. Its totient is φ = 3772240.

The previous prime is 3866581. The next prime is 3866609. The reversal of 3866587 is 7856683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7856683 = 269 ⋅29207.

It is a cyclic number.

It is not a de Polignac number, because 3866587 - 2¹⁹ = 3342299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47113 + ... + 47194.

It is an arithmetic number, because the mean of its divisors is an integer number (990234).

Almost surely, 2^3866587 is an apocalyptic number.

3866587 is a deficient number, since it is larger than the sum of its proper divisors (94349).

3866587 is an equidigital number, since it uses as much as digits as its factorization.

3866587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94348.

The product of its digits is 241920, while the sum is 43.

The square root of 3866587 is about 1966.3639032488. The cubic root of 3866587 is about 156.9552795668.

The spelling of 3866587 in words is "three million, eight hundred sixty-six thousand, five hundred eighty-seven".