5665995665 has 16 divisors (see below), whose sum is σ = 7435829376. Its totient is φ = 4110432000.

The previous prime is 5665995661. The next prime is 5665995677.

5665995665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5665995665 - 2² = 5665995661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5665995598 and 5665995607.

It is not an unprimeable number, because it can be changed into a prime (5665995661) 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, 106397 + ... + 150506.

It is an arithmetic number, because the mean of its divisors is an integer number (464739336).

Almost surely, 2^5665995665 is an apocalyptic number.

5665995665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5665995665 is a deficient number, since it is larger than the sum of its proper divisors (1769833711).

5665995665 is a wasteful number, since it uses less digits than its factorization.

5665995665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257320.

The product of its digits is 65610000, while the sum is 62.

The square root of 5665995665 is about 75272.8082709819. The cubic root of 5665995665 is about 1782.7567082270.

The spelling of 5665995665 in words is "five billion, six hundred sixty-five million, nine hundred ninety-five thousand, six hundred sixty-five".