3868665 has 16 divisors (see below), whose sum is σ = 6216000. Its totient is φ = 2054592.

The previous prime is 3868649. The next prime is 3868679. The reversal of 3868665 is 5668683.

It is not a de Polignac number, because 3868665 - 2⁴ = 3868649 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4866 + ... + 5604.

It is an arithmetic number, because the mean of its divisors is an integer number (388500).

Almost surely, 2^3868665 is an apocalyptic number.

It is an amenable number.

3868665 is a deficient number, since it is larger than the sum of its proper divisors (2347335).

3868665 is a wasteful number, since it uses less digits than its factorization.

3868665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its digits is 207360, while the sum is 42.

The square root of 3868665 is about 1966.8922187044. The cubic root of 3868665 is about 156.9833917547.

The spelling of 3868665 in words is "three million, eight hundred sixty-eight thousand, six hundred sixty-five".