5666678889 has 8 divisors (see below), whose sum is σ = 7884075072. Its totient is φ = 3613534320.

The previous prime is 5666678869. The next prime is 5666678891. The reversal of 5666678889 is 9888766665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5666678889 - 2¹³ = 5666670697 is a prime.

It is a super-2 number, since 2×5666678889² = 64222499262076548642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69), and also a Moran number because the ratio is a prime number: 82125781 = 5666678889 / (5 + 6 + 6 + 6 + 6 + 7 + 8 + 8 + 8 + 9).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5666678869) 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, 41062822 + ... + 41062959.

It is an arithmetic number, because the mean of its divisors is an integer number (985509384).

Almost surely, 2^5666678889 is an apocalyptic number.

It is an amenable number.

5666678889 is a deficient number, since it is larger than the sum of its proper divisors (2217396183).

5666678889 is a wasteful number, since it uses less digits than its factorization.

5666678889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82125807.

The product of its digits is 209018880, while the sum is 69.

The square root of 5666678889 is about 75277.3464529668. The cubic root of 5666678889 is about 1782.8283621950.

The spelling of 5666678889 in words is "five billion, six hundred sixty-six million, six hundred seventy-eight thousand, eight hundred eighty-nine".