6866850845 has 4 divisors (see below), whose sum is σ = 8240221020. Its totient is φ = 5493480672.

The previous prime is 6866850841. The next prime is 6866850853. The reversal of 6866850845 is 5480586686.

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 3985523161 + 2881327684 = 63131^2 + 53678^2 .

It is a cyclic number.

It is not a de Polignac number, because 6866850845 - 2² = 6866850841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866850841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686685080 + ... + 686685089.

It is an arithmetic number, because the mean of its divisors is an integer number (2060055255).

Almost surely, 2^6866850845 is an apocalyptic number.

It is an amenable number.

6866850845 is a deficient number, since it is larger than the sum of its proper divisors (1373370175).

6866850845 is a wasteful number, since it uses less digits than its factorization.

6866850845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373370174.

The product of its (nonzero) digits is 11059200, while the sum is 56.

The square root of 6866850845 is about 82866.4639344530. The cubic root of 6866850845 is about 1900.7246400306.

The spelling of 6866850845 in words is "six billion, eight hundred sixty-six million, eight hundred fifty thousand, eight hundred forty-five".