6864312537 has 24 divisors (see below), whose sum is σ = 10162206600. Its totient is φ = 4462283520.

The previous prime is 6864312529. The next prime is 6864312551. The reversal of 6864312537 is 7352134686.

6864312537 is a `hidden beast` number, since 6 + 86 + 4 + 31 + 2 + 537 = 666.

6864312537 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24336 + 6864288201 = 156^2 + 82851^2 .

It is not a de Polignac number, because 6864312537 - 2³ = 6864312529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6864312492 and 6864312501.

It is not an unprimeable number, because it can be changed into a prime (6864312517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984339 + ... + 991287.

It is an arithmetic number, because the mean of its divisors is an integer number (423425275).

Almost surely, 2^6864312537 is an apocalyptic number.

It is an amenable number.

6864312537 is a deficient number, since it is larger than the sum of its proper divisors (3297894063).

6864312537 is a wasteful number, since it uses less digits than its factorization.

6864312537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9673 (or 9670 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 6864312537 is about 82851.1468659306. The cubic root of 6864312537 is about 1900.4904123737.

The spelling of 6864312537 in words is "six billion, eight hundred sixty-four million, three hundred twelve thousand, five hundred thirty-seven".