3606821845 has 12 divisors (see below), whose sum is σ = 4757428620. Its totient is φ = 2623142720.

The previous prime is 3606821839. The next prime is 3606821849. The reversal of 3606821845 is 5481286063.

3606821845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 368870436 + 3237951409 = 19206^2 + 56903^2 .

It is not a de Polignac number, because 3606821845 - 2¹⁵ = 3606789077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3606821849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2980240 + ... + 2981449.

It is an arithmetic number, because the mean of its divisors is an integer number (396452385).

Almost surely, 2^3606821845 is an apocalyptic number.

It is an amenable number.

3606821845 is a deficient number, since it is larger than the sum of its proper divisors (1150606775).

3606821845 is a wasteful number, since it uses less digits than its factorization.

3606821845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961716 (or 5961705 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 3606821845 is about 60056.8218023565. The cubic root of 3606821845 is about 1533.5863361923.

The spelling of 3606821845 in words is "three billion, six hundred six million, eight hundred twenty-one thousand, eight hundred forty-five".