6827755985 has 8 divisors (see below), whose sum is σ = 8675266536. Its totient is φ = 5140898560.

The previous prime is 6827755981. The next prime is 6827755993. The reversal of 6827755985 is 5895577286.

It can be written as a sum of positive squares in 4 ways, for example, as 1920893584 + 4906862401 = 43828^2 + 70049^2 .

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

It is not a de Polignac number, because 6827755985 - 2² = 6827755981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6827755981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40163186 + ... + 40163355.

It is an arithmetic number, because the mean of its divisors is an integer number (1084408317).

Almost surely, 2^6827755985 is an apocalyptic number.

It is an amenable number.

6827755985 is a deficient number, since it is larger than the sum of its proper divisors (1847510551).

6827755985 is a wasteful number, since it uses less digits than its factorization.

6827755985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80326563.

The product of its digits is 42336000, while the sum is 62.

The square root of 6827755985 is about 82630.2365057731. The cubic root of 6827755985 is about 1897.1106577858.

The spelling of 6827755985 in words is "six billion, eight hundred twenty-seven million, seven hundred fifty-five thousand, nine hundred eighty-five".