5667778889 has 4 divisors (see below), whose sum is σ = 5668213524. Its totient is φ = 5667344256.

The previous prime is 5667778871. The next prime is 5667778957. The reversal of 5667778889 is 9888777665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4424511289 + 1243267600 = 66517^2 + 35260^2 .

It is a cyclic number.

It is not a de Polignac number, because 5667778889 - 2²⁴ = 5651001673 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5667778859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197132 + ... + 224045.

It is an arithmetic number, because the mean of its divisors is an integer number (1417053381).

Almost surely, 2^5667778889 is an apocalyptic number.

It is an amenable number.

5667778889 is a deficient number, since it is larger than the sum of its proper divisors (434635).

5667778889 is a wasteful number, since it uses less digits than its factorization.

5667778889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434634.

The product of its digits is 284497920, while the sum is 71.

The square root of 5667778889 is about 75284.6524133571. The cubic root of 5667778889 is about 1782.9437139648.

The spelling of 5667778889 in words is "five billion, six hundred sixty-seven million, seven hundred seventy-eight thousand, eight hundred eighty-nine".