3865688 has 8 divisors (see below), whose sum is σ = 7248180. Its totient is φ = 1932840.

The previous prime is 3865663. The next prime is 3865691. The reversal of 3865688 is 8865683.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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, 241598 + ... + 241613.

Almost surely, 2^3865688 is an apocalyptic number.

It is an amenable number.

3865688 is a deficient number, since it is larger than the sum of its proper divisors (3382492).

3865688 is a wasteful number, since it uses less digits than its factorization.

3865688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483217 (or 483213 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 3865688 is about 1966.1352954464. The cubic root of 3865688 is about 156.9431143392.

The spelling of 3865688 in words is "three million, eight hundred sixty-five thousand, six hundred eighty-eight".