563838660 has 288 divisors, whose sum is σ = 2258710272. Its totient is φ = 110223360.

The previous prime is 563838647. The next prime is 563838689. The reversal of 563838660 is 66838365.

563838660 is a `hidden beast` number, since 5 + 638 + 3 + 8 + 6 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 234424 + ... + 236816.

It is an arithmetic number, because the mean of its divisors is an integer number (7842744).

Almost surely, 2^563838660 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 563838660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129355136).

563838660 is an abundant number, since it is smaller than the sum of its proper divisors (1694871612).

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

563838660 is a wasteful number, since it uses less digits than its factorization.

563838660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 563838660 is about 23745.2871113406. The cubic root of 563838660 is about 826.1361316513.

The spelling of 563838660 in words is "five hundred sixty-three million, eight hundred thirty-eight thousand, six hundred sixty".