989648 has 20 divisors (see below), whose sum is σ = 2092128. Its totient is φ = 449760.

The previous prime is 989647. The next prime is 989663. The reversal of 989648 is 846989.

989648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 989599 and 989608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989641) 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, 2636 + ... + 2987.

2⁹⁸⁹⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

989648 is an abundant number, since it is smaller than the sum of its proper divisors (1102480).

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

989648 is a wasteful number, since it uses less digits than its factorization.

989648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642 (or 5636 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 989648 is about 994.8105347251. The cubic root of 989648 is about 99.6537357278.

The spelling of 989648 in words is "nine hundred eighty-nine thousand, six hundred forty-eight".