3886747686 has 64 divisors (see below), whose sum is σ = 8817984000. Its totient is φ = 1268568288.

The previous prime is 3886747681. The next prime is 3886747721. The reversal of 3886747686 is 6867476883.

3886747686 is a `hidden beast` number, since 3 + 8 + 86 + 7 + 476 + 86 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886747681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1850665 + ... + 1852763.

It is an arithmetic number, because the mean of its divisors is an integer number (137781000).

Almost surely, 2^3886747686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3886747686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4408992000).

3886747686 is an abundant number, since it is smaller than the sum of its proper divisors (4931236314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3886747686 is a wasteful number, since it uses less digits than its factorization.

3886747686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810 (or 2804 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The square root of 3886747686 is about 62343.7862661549. The cubic root of 3886747686 is about 1572.2759916912.

The spelling of 3886747686 in words is "three billion, eight hundred eighty-six million, seven hundred forty-seven thousand, six hundred eighty-six".