564640244 has 48 divisors (see below), whose sum is σ = 1198052352. Its totient is φ = 227308032.

The previous prime is 564640213. The next prime is 564640247. The reversal of 564640244 is 442046465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564640247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359549 + ... + 361115.

It is an arithmetic number, because the mean of its divisors is an integer number (24959424).

Almost surely, 2^564640244 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 564640244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599026176).

564640244 is an abundant number, since it is smaller than the sum of its proper divisors (633412108).

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

564640244 is a wasteful number, since it uses less digits than its factorization.

564640244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352 (or 2350 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 564640244 is about 23762.1599186606. The cubic root of 564640244 is about 826.5274397711.

The spelling of 564640244 in words is "five hundred sixty-four million, six hundred forty thousand, two hundred forty-four".