564771680 has 96 divisors (see below), whose sum is σ = 1469664000. Its totient is φ = 203384320.

The previous prime is 564771643. The next prime is 564771689. The reversal of 564771680 is 86177465.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564771689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186821 + ... + 189819.

It is an arithmetic number, because the mean of its divisors is an integer number (15309000).

Almost surely, 2^564771680 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 564771680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734832000).

564771680 is an abundant number, since it is smaller than the sum of its proper divisors (904892320).

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

564771680 is a wasteful number, since it uses less digits than its factorization.

564771680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132 (or 3124 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 564771680 is about 23764.9254154100. The cubic root of 564771680 is about 826.5915673482.

The spelling of 564771680 in words is "five hundred sixty-four million, seven hundred seventy-one thousand, six hundred eighty".