6847065805 has 16 divisors (see below), whose sum is σ = 8436428784. Its totient is φ = 5331640320.

The previous prime is 6847065803. The next prime is 6847065847. The reversal of 6847065805 is 5085607486.

It can be written as a sum of positive squares in 8 ways, for example, as 575376169 + 6271689636 = 23987^2 + 79194^2 .

It is not a de Polignac number, because 6847065805 - 2¹ = 6847065803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847065803) 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 15 ways as a sum of consecutive naturals, for example, 50197 + ... + 127333.

It is an arithmetic number, because the mean of its divisors is an integer number (527276799).

Almost surely, 2^6847065805 is an apocalyptic number.

It is an amenable number.

6847065805 is a deficient number, since it is larger than the sum of its proper divisors (1589362979).

6847065805 is a wasteful number, since it uses less digits than its factorization.

6847065805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77616.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 6847065805 is about 82746.9987673269. The cubic root of 6847065805 is about 1898.8974032076.

The spelling of 6847065805 in words is "six billion, eight hundred forty-seven million, sixty-five thousand, eight hundred five".