9788681 has 12 divisors (see below), whose sum is σ = 11499408. Its totient is φ = 8307432.

The previous prime is 9788677. The next prime is 9788693. The reversal of 9788681 is 1868879.

It is not a de Polignac number, because 9788681 - 2² = 9788677 is a prime.

It is a super-2 number, since 2×9788681² = 191636551439522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9788981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4310 + ... + 6176.

It is an arithmetic number, because the mean of its divisors is an integer number (958284).

Almost surely, 2^9788681 is an apocalyptic number.

It is an amenable number.

9788681 is a deficient number, since it is larger than the sum of its proper divisors (1710727).

9788681 is a wasteful number, since it uses less digits than its factorization.

9788681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1981 counting only the distinct ones).

The product of its digits is 193536, while the sum is 47.

The square root of 9788681 is about 3128.6867852184. The cubic root of 9788681 is about 213.9150753369.

The spelling of 9788681 in words is "nine million, seven hundred eighty-eight thousand, six hundred eighty-one".