989668682 has 16 divisors (see below), whose sum is σ = 1516854600. Its totient is φ = 484104192.

The previous prime is 989668663. The next prime is 989668699. The reversal of 989668682 is 286866989.

It is a Cunningham number, because it is equal to 31459²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 713477521 + 276191161 = 26711^2 + 16619^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24194 + ... + 50642.

Almost surely, 2^989668682 is an apocalyptic number.

989668682 is a deficient number, since it is larger than the sum of its proper divisors (527185918).

989668682 is a wasteful number, since it uses less digits than its factorization.

989668682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26857.

The product of its digits is 17915904, while the sum is 62.

The square root of 989668682 is about 31459.0000158937. Note that the first 4 decimals coincide. The cubic root of 989668682 is about 996.5442992213.

The spelling of 989668682 in words is "nine hundred eighty-nine million, six hundred sixty-eight thousand, six hundred eighty-two".