5665665665 has 32 divisors (see below), whose sum is σ = 7568301312. Its totient is φ = 4036896000.

The previous prime is 5665665637. The next prime is 5665665697.

5665665665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5665665665 - 2¹⁴ = 5665649281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5665665665.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879155 + ... + 885575.

It is an arithmetic number, because the mean of its divisors is an integer number (236509416).

Almost surely, 2^5665665665 is an apocalyptic number.

5665665665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5665665665 is a deficient number, since it is larger than the sum of its proper divisors (1902635647).

5665665665 is a wasteful number, since it uses less digits than its factorization.

5665665665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761.

The product of its digits is 29160000, while the sum is 56.

The square root of 5665665665 is about 75270.6162124371. The cubic root of 5665665665 is about 1782.7220970030.

The spelling of 5665665665 in words is "five billion, six hundred sixty-five million, six hundred sixty-five thousand, six hundred sixty-five".