5666776665 has 96 divisors (see below), whose sum is σ = 10283245056. Its totient is φ = 2661120000.

The previous prime is 5666776649. The next prime is 5666776667.

5666776665 is nontrivially palindromic in base 10.

5666776665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5666776665 - 2⁴ = 5666776649 is a prime.

It is a super-2 number, since 2×5666776665² = 64224715541977044450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5666776599 and 5666776608.

It is not an unprimeable number, because it can be changed into a prime (5666776667) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20166325 + ... + 20166605.

It is an arithmetic number, because the mean of its divisors is an integer number (107117136).

Almost surely, 2^5666776665 is an apocalyptic number.

5666776665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5666776665 is a deficient number, since it is larger than the sum of its proper divisors (4616468391).

5666776665 is a wasteful number, since it uses less digits than its factorization.

5666776665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 612 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 60.

The square root of 5666776665 is about 75277.9958885729. The cubic root of 5666776665 is about 1782.8386161036.

The spelling of 5666776665 in words is "five billion, six hundred sixty-six million, seven hundred seventy-six thousand, six hundred sixty-five".