564726660 has 96 divisors (see below), whose sum is σ = 1619678592. Its totient is φ = 146964480.

The previous prime is 564726601. The next prime is 564726677. The reversal of 564726660 is 66627465.

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 31 ways as a sum of consecutive naturals, for example, 816915 + ... + 817605.

It is an arithmetic number, because the mean of its divisors is an integer number (16871652).

Almost surely, 2^564726660 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 564726660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809839296).

564726660 is an abundant number, since it is smaller than the sum of its proper divisors (1054951932).

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

564726660 is a wasteful number, since it uses less digits than its factorization.

564726660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 564726660 is about 23763.9782023128. The cubic root of 564726660 is about 826.5696032268.

The spelling of 564726660 in words is "five hundred sixty-four million, seven hundred twenty-six thousand, six hundred sixty".