6888636849 has 8 divisors (see below), whose sum is σ = 9185232672. Its totient is φ = 4592232800.

The previous prime is 6888636823. The next prime is 6888636871. The reversal of 6888636849 is 9486368886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6888636849 - 2²¹ = 6886539697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6888636849.

It is not an unprimeable number, because it can be changed into a prime (6888636889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114637 + ... + 164069.

It is an arithmetic number, because the mean of its divisors is an integer number (1148154084).

Almost surely, 2^6888636849 is an apocalyptic number.

It is an amenable number.

6888636849 is a deficient number, since it is larger than the sum of its proper divisors (2296595823).

6888636849 is a wasteful number, since it uses less digits than its factorization.

6888636849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95887.

The product of its digits is 95551488, while the sum is 66.

The square root of 6888636849 is about 82997.8123145424. The cubic root of 6888636849 is about 1902.7326191609.

The spelling of 6888636849 in words is "six billion, eight hundred eighty-eight million, six hundred thirty-six thousand, eight hundred forty-nine".