9981682 has 8 divisors (see below), whose sum is σ = 15026652. Its totient is φ = 4972800.

The previous prime is 9981661. The next prime is 9981689. The reversal of 9981682 is 2861899.

It is a happy number.

9981682 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9979281 + 2401 = 3159^2 + 49^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (9981689) 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, 8319 + ... + 9442.

Almost surely, 2^9981682 is an apocalyptic number.

9981682 is a deficient number, since it is larger than the sum of its proper divisors (5044970).

9981682 is a wasteful number, since it uses less digits than its factorization.

9981682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18044.

The product of its digits is 62208, while the sum is 43.

The square root of 9981682 is about 3159.3800024688. The cubic root of 9981682 is about 215.3118388149.

The spelling of 9981682 in words is "nine million, nine hundred eighty-one thousand, six hundred eighty-two".