983566660 has 24 divisors (see below), whose sum is σ = 2071258560. Its totient is φ = 392327904.

The previous prime is 983566643. The next prime is 983566663. The reversal of 983566660 is 66665389.

It is not an unprimeable number, because it can be changed into a prime (983566663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61314 + ... + 75673.

It is an arithmetic number, because the mean of its divisors is an integer number (86302440).

Almost surely, 2^983566660 is an apocalyptic number.

It is an amenable number.

983566660 is an abundant number, since it is smaller than the sum of its proper divisors (1087691900).

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

983566660 is a wasteful number, since it uses less digits than its factorization.

983566660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137355 (or 137353 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 983566660 is about 31361.8663347703. The cubic root of 983566660 is about 994.4919369440.

The spelling of 983566660 in words is "nine hundred eighty-three million, five hundred sixty-six thousand, six hundred sixty".