3861688 has 8 divisors (see below), whose sum is σ = 7240680. Its totient is φ = 1930840.

The previous prime is 3861659. The next prime is 3861709. The reversal of 3861688 is 8861683.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3861688.

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, 241348 + ... + 241363.

It is an arithmetic number, because the mean of its divisors is an integer number (905085).

Almost surely, 2^3861688 is an apocalyptic number.

It is an amenable number.

3861688 is a deficient number, since it is larger than the sum of its proper divisors (3378992).

3861688 is a wasteful number, since it uses less digits than its factorization.

3861688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482717 (or 482713 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 3861688 is about 1965.1178081733. The cubic root of 3861688 is about 156.8889636412. Note that the first 3 decimals are identical.

The spelling of 3861688 in words is "three million, eight hundred sixty-one thousand, six hundred eighty-eight".