564660728 has 32 divisors (see below), whose sum is σ = 1093966560. Its totient is φ = 273087360.

The previous prime is 564660727. The next prime is 564660731. The reversal of 564660728 is 827066465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564660727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20726 + ... + 39482.

It is an arithmetic number, because the mean of its divisors is an integer number (34186455).

Almost surely, 2^564660728 is an apocalyptic number.

It is an amenable number.

564660728 is a deficient number, since it is larger than the sum of its proper divisors (529305832).

564660728 is a wasteful number, since it uses less digits than its factorization.

564660728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18887 (or 18883 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 564660728 is about 23762.5909361753. The cubic root of 564660728 is about 826.5374345619.

The spelling of 564660728 in words is "five hundred sixty-four million, six hundred sixty thousand, seven hundred twenty-eight".