5669779665 has 32 divisors (see below), whose sum is σ = 9988862976. Its totient is φ = 2723284160.

The previous prime is 5669779651. The next prime is 5669779673.

5669779665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5669779665 - 2¹⁹ = 5669255377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5669779596 and 5669779605.

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, 142917 + ... + 178226.

It is an arithmetic number, because the mean of its divisors is an integer number (312151968).

Almost surely, 2^5669779665 is an apocalyptic number.

5669779665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5669779665 is a deficient number, since it is larger than the sum of its proper divisors (4319083311).

5669779665 is a wasteful number, since it uses less digits than its factorization.

5669779665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321269.

The product of its digits is 128595600, while the sum is 66.

The square root of 5669779665 is about 75297.9393144328. The cubic root of 5669779665 is about 1783.1534875748.

The spelling of 5669779665 in words is "five billion, six hundred sixty-nine million, seven hundred seventy-nine thousand, six hundred sixty-five".