983686656 has 40 divisors (see below), whose sum is σ = 2620606824. Its totient is φ = 327895040.

The previous prime is 983686643. The next prime is 983686661. The reversal of 983686656 is 656686389.

It is a junction number, because it is equal to n+sod(n) for n = 983686596 and 983686605.

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, 318675 + ... + 321746.

Almost surely, 2^983686656 is an apocalyptic number.

983686656 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

983686656 is an abundant number, since it is smaller than the sum of its proper divisors (1636920168).

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

983686656 is an equidigital number, since it uses as much as digits as its factorization.

983686656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640442 (or 640426 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 57.

The square root of 983686656 is about 31363.7793641009. The cubic root of 983686656 is about 994.5323782639.

The spelling of 983686656 in words is "nine hundred eighty-three million, six hundred eighty-six thousand, six hundred fifty-six".