6889574889 has 12 divisors (see below), whose sum is σ = 9960596100. Its totient is φ = 4588901664.

The previous prime is 6889574873. The next prime is 6889574891. The reversal of 6889574889 is 9884759886.

6889574889 is a `hidden beast` number, since 68 + 89 + 5 + 7 + 488 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3576996864 + 3312578025 = 59808^2 + 57555^2 .

It is not a de Polignac number, because 6889574889 - 2⁴ = 6889574873 is a prime.

It is a super-2 number, since 2×6889574889² = 94932484302278724642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6889574849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335154 + ... + 355115.

It is an arithmetic number, because the mean of its divisors is an integer number (830049675).

Almost surely, 2^6889574889 is an apocalyptic number.

It is an amenable number.

6889574889 is a deficient number, since it is larger than the sum of its proper divisors (3071021211).

6889574889 is a wasteful number, since it uses less digits than its factorization.

6889574889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691384 (or 691381 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 72.

The square root of 6889574889 is about 83003.4631144990. The cubic root of 6889574889 is about 1902.8189815930.

The spelling of 6889574889 in words is "six billion, eight hundred eighty-nine million, five hundred seventy-four thousand, eight hundred eighty-nine".