564388944 has 160 divisors (see below), whose sum is σ = 1741388544. Its totient is φ = 154152960.

The previous prime is 564388873. The next prime is 564388963. The reversal of 564388944 is 449883465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 729742 + ... + 730514.

Almost surely, 2^564388944 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 564388944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870694272).

564388944 is an abundant number, since it is smaller than the sum of its proper divisors (1176999600).

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

564388944 is a wasteful number, since it uses less digits than its factorization.

564388944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 879 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The square root of 564388944 is about 23756.8715112070. The cubic root of 564388944 is about 826.4048028829.

The spelling of 564388944 in words is "five hundred sixty-four million, three hundred eighty-eight thousand, nine hundred forty-four".