5656415663 has 4 divisors (see below), whose sum is σ = 5809291800. Its totient is φ = 5503539528.

The previous prime is 5656415659. The next prime is 5656415683. The reversal of 5656415663 is 3665146565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5656415663 - 2² = 5656415659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656415623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76438013 + ... + 76438086.

It is an arithmetic number, because the mean of its divisors is an integer number (1452322950).

Almost surely, 2^5656415663 is an apocalyptic number.

5656415663 is a deficient number, since it is larger than the sum of its proper divisors (152876137).

5656415663 is a wasteful number, since it uses less digits than its factorization.

5656415663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152876136.

The product of its digits is 1944000, while the sum is 47.

The square root of 5656415663 is about 75209.1461392828. The cubic root of 5656415663 is about 1781.7513863944.

It can be divided in two parts, 56564 and 15663, that added together give a palindrome (72227).

The spelling of 5656415663 in words is "five billion, six hundred fifty-six million, four hundred fifteen thousand, six hundred sixty-three".