989583660 has 72 divisors (see below), whose sum is σ = 3232647600. Its totient is φ = 243589248.

The previous prime is 989583659. The next prime is 989583689. The reversal of 989583660 is 66385989.

It is a junction number, because it is equal to n+sod(n) for n = 989583597 and 989583606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209110 + ... + 213789.

Almost surely, 2^989583660 is an apocalyptic number.

989583660 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

989583660 is an abundant number, since it is smaller than the sum of its proper divisors (2243063940).

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

989583660 is a wasteful number, since it uses less digits than its factorization.

989583660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422927 (or 422922 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 989583660 is about 31457.6486724612. The cubic root of 989583660 is about 996.5157608436.

The spelling of 989583660 in words is "nine hundred eighty-nine million, five hundred eighty-three thousand, six hundred sixty".