564660726 has 32 divisors (see below), whose sum is σ = 1318118400. Its totient is φ = 157898496.

The previous prime is 564660631. The next prime is 564660727. The reversal of 564660726 is 627066465.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 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, 141051 + ... + 144998.

It is an arithmetic number, because the mean of its divisors is an integer number (41191200).

Almost surely, 2^564660726 is an apocalyptic number.

564660726 is an abundant number, since it is smaller than the sum of its proper divisors (753457674).

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

564660726 is a wasteful number, since it uses less digits than its factorization.

564660726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286108.

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

The square root of 564660726 is about 23762.5908940923. The cubic root of 564660726 is about 826.5374335860.

The spelling of 564660726 in words is "five hundred sixty-four million, six hundred sixty thousand, seven hundred twenty-six".