3656996563 has 12 divisors (see below), whose sum is σ = 4028687928. Its totient is φ = 3292160160.

The previous prime is 3656996501. The next prime is 3656996593.

3656996563 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3656996563 - 2⁹ = 3656996051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3656996498 and 3656996507.

It is not an unprimeable number, because it can be changed into a prime (3656996593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101031 + ... + 132367.

It is an arithmetic number, because the mean of its divisors is an integer number (335723994).

Almost surely, 2^3656996563 is an apocalyptic number.

3656996563 is a deficient number, since it is larger than the sum of its proper divisors (371691365).

3656996563 is a wasteful number, since it uses less digits than its factorization.

3656996563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31554 (or 31451 counting only the distinct ones).

The product of its digits is 23619600, while the sum is 58.

The square root of 3656996563 is about 60473.1061133790. The cubic root of 3656996563 is about 1540.6648845134.

The spelling of 3656996563 in words is "three billion, six hundred fifty-six million, nine hundred ninety-six thousand, five hundred sixty-three".