5663553665 has 64 divisors (see below), whose sum is σ = 8674283520. Its totient is φ = 3447594240.

The previous prime is 5663553641. The next prime is 5663553667.

It is a happy number.

5663553665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5663553665 - 2¹² = 5663549569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5663553667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3792659 + ... + 3794151.

It is an arithmetic number, because the mean of its divisors is an integer number (135535680).

Almost surely, 2^5663553665 is an apocalyptic number.

5663553665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5663553665 is a deficient number, since it is larger than the sum of its proper divisors (3010729855).

5663553665 is a wasteful number, since it uses less digits than its factorization.

5663553665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742.

The product of its digits is 7290000, while the sum is 50.

The square root of 5663553665 is about 75256.5855257864. The cubic root of 5663553665 is about 1782.5005533381.

The spelling of 5663553665 in words is "five billion, six hundred sixty-three million, five hundred fifty-three thousand, six hundred sixty-five".