3861676856 has 16 divisors (see below), whose sum is σ = 7348714440. Its totient is φ = 1902019680.

The previous prime is 3861676853. The next prime is 3861676879. The reversal of 3861676856 is 6586761683.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861676853) 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, 3601775 + ... + 3602846.

Almost surely, 2^3861676856 is an apocalyptic number.

It is an amenable number.

3861676856 is a deficient number, since it is larger than the sum of its proper divisors (3487037584).

3861676856 is a wasteful number, since it uses less digits than its factorization.

3861676856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204694 (or 7204690 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 3861676856 is about 62142.3917788815. The cubic root of 3861676856 is about 1568.8881272513. Note that the first 3 decimals are identical.

The spelling of 3861676856 in words is "three billion, eight hundred sixty-one million, six hundred seventy-six thousand, eight hundred fifty-six".