9681998 has 8 divisors (see below), whose sum is σ = 15023880. Its totient is φ = 4674040.

The previous prime is 9681989. The next prime is 9682007. The reversal of 9681998 is 8991869.

It is an interprime number because it is at equal distance from previous prime (9681989) and next prime (9682007).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83408 + ... + 83523.

It is an arithmetic number, because the mean of its divisors is an integer number (1877985).

Almost surely, 2^9681998 is an apocalyptic number.

9681998 is a deficient number, since it is larger than the sum of its proper divisors (5341882).

9681998 is a wasteful number, since it uses less digits than its factorization.

9681998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166962.

The product of its digits is 279936, while the sum is 50.

The square root of 9681998 is about 3111.5909114149. The cubic root of 9681998 is about 213.1351093836.

The spelling of 9681998 in words is "nine million, six hundred eighty-one thousand, nine hundred ninety-eight".