6886843641 has 10 divisors (see below), whose sum is σ = 10287754202. Its totient is φ = 4591229040.

The previous prime is 6886843631. The next prime is 6886843651. The reversal of 6886843641 is 1463486886.

It is an interprime number because it is at equal distance from previous prime (6886843631) and next prime (6886843651).

It can be written as a sum of positive squares in only one way, i.e., 5538485241 + 1348358400 = 74421^2 + 36720^2 .

It is not a de Polignac number, because 6886843641 - 2³⁰ = 5813101817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6886843631) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42511300 + ... + 42511461.

Almost surely, 2^6886843641 is an apocalyptic number.

It is an amenable number.

6886843641 is a deficient number, since it is larger than the sum of its proper divisors (3400910561).

6886843641 is an equidigital number, since it uses as much as digits as its factorization.

6886843641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85022773 (or 85022764 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The square root of 6886843641 is about 82987.0088688585. The cubic root of 6886843641 is about 1902.5675022427.

The spelling of 6886843641 in words is "six billion, eight hundred eighty-six million, eight hundred forty-three thousand, six hundred forty-one".