3868687 has 4 divisors (see below), whose sum is σ = 4002120. Its totient is φ = 3735256.

The previous prime is 3868679. The next prime is 3868699. The reversal of 3868687 is 7868683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7868683 = 157 ⋅50119.

It is a cyclic number.

It is not a de Polignac number, because 3868687 - 2³ = 3868679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868187) 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, 66673 + ... + 66730.

It is an arithmetic number, because the mean of its divisors is an integer number (1000530).

Almost surely, 2^3868687 is an apocalyptic number.

3868687 is a deficient number, since it is larger than the sum of its proper divisors (133433).

3868687 is a wasteful number, since it uses less digits than its factorization.

3868687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133432.

The product of its digits is 387072, while the sum is 46.

The square root of 3868687 is about 1966.8978112754. The cubic root of 3868687 is about 156.9836893275.

The spelling of 3868687 in words is "three million, eight hundred sixty-eight thousand, six hundred eighty-seven".