3563841665 has 16 divisors (see below), whose sum is σ = 4650562512. Its totient is φ = 2610837504.

The previous prime is 3563841649. The next prime is 3563841667. The reversal of 3563841665 is 5661483653.

It can be written as a sum of positive squares in 8 ways, for example, as 3094081 + 3560747584 = 1759^2 + 59672^2 .

It is a cyclic number.

It is not a de Polignac number, because 3563841665 - 2⁴ = 3563841649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3563841667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563444 + ... + 569733.

It is an arithmetic number, because the mean of its divisors is an integer number (290660157).

Almost surely, 2^3563841665 is an apocalyptic number.

It is an amenable number.

3563841665 is a deficient number, since it is larger than the sum of its proper divisors (1086720847).

3563841665 is a wasteful number, since it uses less digits than its factorization.

3563841665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133236.

The product of its digits is 1555200, while the sum is 47.

The square root of 3563841665 is about 59697.9201061478. The cubic root of 3563841665 is about 1527.4703903229.

The spelling of 3563841665 in words is "three billion, five hundred sixty-three million, eight hundred forty-one thousand, six hundred sixty-five".