6395862645 has 12 divisors (see below), whose sum is σ = 11086161996. Its totient is φ = 3411126720.

The previous prime is 6395862643. The next prime is 6395862763. The reversal of 6395862645 is 5462685936.

6395862645 is a `hidden beast` number, since 6 + 3 + 9 + 5 + 8 + 626 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3147546609 + 3248316036 = 56103^2 + 56994^2 .

It is not a de Polignac number, because 6395862645 - 2¹ = 6395862643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6395862591 and 6395862600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6395862643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71065096 + ... + 71065185.

It is an arithmetic number, because the mean of its divisors is an integer number (923846833).

Almost surely, 2^6395862645 is an apocalyptic number.

It is an amenable number.

6395862645 is a deficient number, since it is larger than the sum of its proper divisors (4690299351).

6395862645 is a wasteful number, since it uses less digits than its factorization.

6395862645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142130292 (or 142130289 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The square root of 6395862645 is about 79974.1373507711. The cubic root of 6395862645 is about 1856.2353659357.

The spelling of 6395862645 in words is "six billion, three hundred ninety-five million, eight hundred sixty-two thousand, six hundred forty-five".