564988840 has 64 divisors (see below), whose sum is σ = 1371686400. Its totient is φ = 208204032.

The previous prime is 564988799. The next prime is 564988861. The reversal of 564988840 is 48889465.

It is a Harshad number since it is a multiple of its sum of digits (52).

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 15 ways as a sum of consecutive naturals, for example, 448131 + ... + 449389.

It is an arithmetic number, because the mean of its divisors is an integer number (21432600).

Almost surely, 2^564988840 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 564988840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685843200).

564988840 is an abundant number, since it is smaller than the sum of its proper divisors (806697560).

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

564988840 is a wasteful number, since it uses less digits than its factorization.

564988840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146 (or 2142 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The square root of 564988840 is about 23769.4938944858. The cubic root of 564988840 is about 826.6974978384.

The spelling of 564988840 in words is "five hundred sixty-four million, nine hundred eighty-eight thousand, eight hundred forty".