5666616680 has 32 divisors (see below), whose sum is σ = 12752461800. Its totient is φ = 2266189056.

The previous prime is 5666616671. The next prime is 5666616689. The reversal of 5666616680 is 866166665.

It is an interprime number because it is at equal distance from previous prime (5666616671) and next prime (5666616689).

It can be written as a sum of positive squares in 4 ways, for example, as 4788916804 + 877699876 = 69202^2 + 29626^2 .

It is a super-2 number, since 2×5666616680² = 64221089196108444800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5666616689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243806 + ... + 266034.

Almost surely, 2^5666616680 is an apocalyptic number.

It is an amenable number.

5666616680 is an abundant number, since it is smaller than the sum of its proper divisors (7085845120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5666616680 is a wasteful number, since it uses less digits than its factorization.

5666616680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28613 (or 28609 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The square root of 5666616680 is about 75276.9332531553. The cubic root of 5666616680 is about 1782.8218381869.

The spelling of 5666616680 in words is "five billion, six hundred sixty-six million, six hundred sixteen thousand, six hundred eighty".