8257989668 has 12 divisors (see below), whose sum is σ = 14527145472. Its totient is φ = 4107376680.

The previous prime is 8257989661. The next prime is 8257989673. The reversal of 8257989668 is 8669897528.

It is a junction number, because it is equal to n+sod(n) for n = 8257989598 and 8257989607.

It is not an unprimeable number, because it can be changed into a prime (8257989661) 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 3 ways as a sum of consecutive naturals, for example, 5403680 + ... + 5405207.

It is an arithmetic number, because the mean of its divisors is an integer number (1210595456).

Almost surely, 2^8257989668 is an apocalyptic number.

It is an amenable number.

8257989668 is a deficient number, since it is larger than the sum of its proper divisors (6269155804).

8257989668 is a wasteful number, since it uses less digits than its factorization.

8257989668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10809082 (or 10809080 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 68.

The square root of 8257989668 is about 90873.4816544409. The cubic root of 8257989668 is about 2021.2720860399.

The spelling of 8257989668 in words is "eight billion, two hundred fifty-seven million, nine hundred eighty-nine thousand, six hundred sixty-eight".