3640003585 has 12 divisors (see below), whose sum is σ = 4523824188. Its totient is φ = 2811585728.

The previous prime is 3640003583. The next prime is 3640003607. The reversal of 3640003585 is 5853000463.

It can be written as a sum of positive squares in 6 ways, for example, as 53361 + 3639950224 = 231^2 + 60332^2 .

It is not a de Polignac number, because 3640003585 - 2¹ = 3640003583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3640003585.

It is not an unprimeable number, because it can be changed into a prime (3640003583) 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 11 ways as a sum of consecutive naturals, for example, 428614 + ... + 437023.

It is an arithmetic number, because the mean of its divisors is an integer number (376985349).

Almost surely, 2^3640003585 is an apocalyptic number.

It is an amenable number.

3640003585 is a deficient number, since it is larger than the sum of its proper divisors (883820603).

3640003585 is an equidigital number, since it uses as much as digits as its factorization.

3640003585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865700 (or 865671 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 3640003585 is about 60332.4422263843. The cubic root of 3640003585 is about 1538.2748412065.

The spelling of 3640003585 in words is "three billion, six hundred forty million, three thousand, five hundred eighty-five".