6845545 has 12 divisors (see below), whose sum is σ = 9556164. Its totient is φ = 4693920.

The previous prime is 6845519. The next prime is 6845549. The reversal of 6845545 is 5455486.

It can be written as a sum of positive squares in 2 ways, for example, as 2893401 + 3952144 = 1701^2 + 1988^2 .

It is not a de Polignac number, because 6845545 - 2⁷ = 6845417 is a prime.

It is a super-2 number, since 2×6845545² = 93722972694050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6845549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13726 + ... + 14215.

It is an arithmetic number, because the mean of its divisors is an integer number (796347).

Almost surely, 2^6845545 is an apocalyptic number.

It is an amenable number.

6845545 is a deficient number, since it is larger than the sum of its proper divisors (2710619).

6845545 is a wasteful number, since it uses less digits than its factorization.

6845545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27960 (or 27953 counting only the distinct ones).

The product of its digits is 96000, while the sum is 37.

The square root of 6845545 is about 2616.3992432349. The cubic root of 6845545 is about 189.8756804466.

The spelling of 6845545 in words is "six million, eight hundred forty-five thousand, five hundred forty-five".