563946840 has 128 divisors (see below), whose sum is σ = 1896868800. Its totient is φ = 149022720.

The previous prime is 563946833. The next prime is 563946869. The reversal of 563946840 is 48649365.

563946840 is a `hidden beast` number, since 5 + 639 + 4 + 6 + 8 + 4 + 0 = 666.

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

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 31 ways as a sum of consecutive naturals, for example, 119730 + ... + 124350.

Almost surely, 2^563946840 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 563946840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948434400).

563946840 is an abundant number, since it is smaller than the sum of its proper divisors (1332921960).

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

563946840 is a wasteful number, since it uses less digits than its factorization.

563946840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754 (or 4744 counting only the distinct ones).

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

The square root of 563946840 is about 23747.5649277984. The cubic root of 563946840 is about 826.1889633672.

The spelling of 563946840 in words is "five hundred sixty-three million, nine hundred forty-six thousand, eight hundred forty".