3868861 has 8 divisors (see below), whose sum is σ = 4060800. Its totient is φ = 3680880.

The previous prime is 3868849. The next prime is 3868897. The reversal of 3868861 is 1688683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3868861 is a prime.

It is a Duffinian number.

3868861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120 + ... + 2998.

It is an arithmetic number, because the mean of its divisors is an integer number (507600).

Almost surely, 2^3868861 is an apocalyptic number.

It is an amenable number.

3868861 is a deficient number, since it is larger than the sum of its proper divisors (191939).

3868861 is a wasteful number, since it uses less digits than its factorization.

3868861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979.

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

The square root of 3868861 is about 1966.9420428676. The cubic root of 3868861 is about 156.9860428178.

The spelling of 3868861 in words is "three million, eight hundred sixty-eight thousand, eight hundred sixty-one".