563721220 has 24 divisors (see below), whose sum is σ = 1190020608. Its totient is φ = 224306400.

The previous prime is 563721211. The next prime is 563721239. The reversal of 563721220 is 22127365.

It is a super-2 number, since 2×563721220² = 635563227756576800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69966 + ... + 77605.

It is an arithmetic number, because the mean of its divisors is an integer number (49584192).

Almost surely, 2^563721220 is an apocalyptic number.

It is an amenable number.

563721220 is an abundant number, since it is smaller than the sum of its proper divisors (626299388).

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

563721220 is a wasteful number, since it uses less digits than its factorization.

563721220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147771 (or 147769 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 563721220 is about 23742.8140707878. The cubic root of 563721220 is about 826.0787699915.

Adding to 563721220 its reverse (22127365), we get a palindrome (585848585).

The spelling of 563721220 in words is "five hundred sixty-three million, seven hundred twenty-one thousand, two hundred twenty".