563917820 has 24 divisors (see below), whose sum is σ = 1195299504. Its totient is φ = 223458176.

The previous prime is 563917801. The next prime is 563917843. The reversal of 563917820 is 28719365.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129617 + ... + 133896.

It is an arithmetic number, because the mean of its divisors is an integer number (49804146).

Almost surely, 2^563917820 is an apocalyptic number.

It is an amenable number.

563917820 is an abundant number, since it is smaller than the sum of its proper divisors (631381684).

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

563917820 is a wasteful number, since it uses less digits than its factorization.

563917820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263629 (or 263627 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 563917820 is about 23746.9539099228. The cubic root of 563917820 is about 826.1747915734.

The spelling of 563917820 in words is "five hundred sixty-three million, nine hundred seventeen thousand, eight hundred twenty".