3864771656 has 16 divisors (see below), whose sum is σ = 7442297340. Its totient is φ = 1880159040.

The previous prime is 3864771629. The next prime is 3864771661. The reversal of 3864771656 is 6561774683.

It can be written as a sum of positive squares in 2 ways, for example, as 3862622500 + 2149156 = 62150^2 + 1466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3864771598 and 3864771607.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6528035 + ... + 6528626.

Almost surely, 2^3864771656 is an apocalyptic number.

It is an amenable number.

3864771656 is a deficient number, since it is larger than the sum of its proper divisors (3577525684).

3864771656 is a wasteful number, since it uses less digits than its factorization.

3864771656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056704 (or 13056700 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 53.

The square root of 3864771656 is about 62167.2876680333. The cubic root of 3864771656 is about 1569.3071247209.

The spelling of 3864771656 in words is "three billion, eight hundred sixty-four million, seven hundred seventy-one thousand, six hundred fifty-six".