6845805 has 24 divisors (see below), whose sum is σ = 11957400. Its totient is φ = 3623040.

The previous prime is 6845803. The next prime is 6845807. The reversal of 6845805 is 5085486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6845803) and next prime (6845807).

It can be written as a sum of positive squares in 4 ways, for example, as 142884 + 6702921 = 378^2 + 2589^2 .

It is not a de Polignac number, because 6845805 - 2¹ = 6845803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6845805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6845803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6195 + ... + 7215.

It is an arithmetic number, because the mean of its divisors is an integer number (498225).

Almost surely, 2^6845805 is an apocalyptic number.

It is an amenable number.

6845805 is a deficient number, since it is larger than the sum of its proper divisors (5111595).

6845805 is a wasteful number, since it uses less digits than its factorization.

6845805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 6845805 is about 2616.4489293697. The cubic root of 6845805 is about 189.8780842997.

The spelling of 6845805 in words is "six million, eight hundred forty-five thousand, eight hundred five".