564421768 has 8 divisors (see below), whose sum is σ = 1058290830. Its totient is φ = 282210880.

The previous prime is 564421747. The next prime is 564421783. The reversal of 564421768 is 867124465.

It can be written as a sum of positive squares in only one way, i.e., 508141764 + 56280004 = 22542^2 + 7502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35276353 + ... + 35276368.

Almost surely, 2^564421768 is an apocalyptic number.

It is an amenable number.

564421768 is a deficient number, since it is larger than the sum of its proper divisors (493869062).

564421768 is a wasteful number, since it uses less digits than its factorization.

564421768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70552727 (or 70552723 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 564421768 is about 23757.5623328657. The cubic root of 564421768 is about 826.4208233866.

The spelling of 564421768 in words is "five hundred sixty-four million, four hundred twenty-one thousand, seven hundred sixty-eight".