6853546985 has 4 divisors (see below), whose sum is σ = 8224256388. Its totient is φ = 5482837584.

The previous prime is 6853546979. The next prime is 6853546993. The reversal of 6853546985 is 5896453586.

6853546985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3959429776 + 2894117209 = 62924^2 + 53797^2 .

It is a cyclic number.

It is not a de Polignac number, because 6853546985 - 2¹² = 6853542889 is a prime.

It is a super-2 number, since 2×6853546985² = 93942212551205180450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685354694 + ... + 685354703.

It is an arithmetic number, because the mean of its divisors is an integer number (2056064097).

Almost surely, 2^6853546985 is an apocalyptic number.

It is an amenable number.

6853546985 is a deficient number, since it is larger than the sum of its proper divisors (1370709403).

6853546985 is a wasteful number, since it uses less digits than its factorization.

6853546985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370709402.

The product of its digits is 31104000, while the sum is 59.

The square root of 6853546985 is about 82786.1521330711. The cubic root of 6853546985 is about 1899.4963563512.

The spelling of 6853546985 in words is "six billion, eight hundred fifty-three million, five hundred forty-six thousand, nine hundred eighty-five".