3986740681 has 16 divisors (see below), whose sum is σ = 4973967360. Its totient is φ = 3104372880.

The previous prime is 3986740663. The next prime is 3986740691. The reversal of 3986740681 is 1860476893.

It is a happy number.

3986740681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3986740681 - 2¹¹ = 3986738633 is a prime.

It is a super-2 number, since 2×3986740681² = 31788202515080687522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3986740631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97090 + ... + 131908.

It is an arithmetic number, because the mean of its divisors is an integer number (310872960).

Almost surely, 2^3986740681 is an apocalyptic number.

It is an amenable number.

3986740681 is a deficient number, since it is larger than the sum of its proper divisors (987226679).

3986740681 is a wasteful number, since it uses less digits than its factorization.

3986740681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36324.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 3986740681 is about 63140.6420699061. The cubic root of 3986740681 is about 1585.6451222565.

The spelling of 3986740681 in words is "three billion, nine hundred eighty-six million, seven hundred forty thousand, six hundred eighty-one".