3655995563 has 32 divisors (see below), whose sum is σ = 4117478400. Its totient is φ = 3218434560.

The previous prime is 3655995557. The next prime is 3655995569.

3655995563 is nontrivially palindromic in base 10.

3655995563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3655995557) and next prime (3655995569).

It is not a de Polignac number, because 3655995563 - 2⁴ = 3655995547 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3655995499 and 3655995508.

It is not an unprimeable number, because it can be changed into a prime (3655995569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18371738 + ... + 18371936.

It is an arithmetic number, because the mean of its divisors is an integer number (128671200).

Almost surely, 2^3655995563 is an apocalyptic number.

3655995563 is a deficient number, since it is larger than the sum of its proper divisors (461482837).

3655995563 is a wasteful number, since it uses less digits than its factorization.

3655995563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587.

The product of its digits is 16402500, while the sum is 56.

The square root of 3655995563 is about 60464.8291405839. The cubic root of 3655995563 is about 1540.5243004525.

The spelling of 3655995563 in words is "three billion, six hundred fifty-five million, nine hundred ninety-five thousand, five hundred sixty-three".