989768 has 32 divisors (see below), whose sum is σ = 2069760. Its totient is φ = 440640.

The previous prime is 989761. The next prime is 989777. The reversal of 989768 is 867989.

It is not an unprimeable number, because it can be changed into a prime (989761) by changing a digit.

989768 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071 + ... + 3377.

It is an arithmetic number, because the mean of its divisors is an integer number (64680).

2⁹⁸⁹⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034880).

989768 is an abundant number, since it is smaller than the sum of its proper divisors (1079992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989768 is a wasteful number, since it uses less digits than its factorization.

989768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 353 counting only the distinct ones).

The product of its digits is 217728, while the sum is 47.

The square root of 989768 is about 994.8708458891. The cubic root of 989768 is about 99.6577634107.

The spelling of 989768 in words is "nine hundred eighty-nine thousand, seven hundred sixty-eight".