564544240 has 40 divisors (see below), whose sum is σ = 1413534528. Its totient is φ = 208446720.

The previous prime is 564544237. The next prime is 564544243. The reversal of 564544240 is 42445465.

It is an interprime number because it is at equal distance from previous prime (564544237) and next prime (564544243).

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 564544196 and 564544205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564544243) 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, 270376 + ... + 272455.

Almost surely, 2^564544240 is an apocalyptic number.

It is an amenable number.

564544240 is an abundant number, since it is smaller than the sum of its proper divisors (848990288).

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

564544240 is a wasteful number, since it uses less digits than its factorization.

564544240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542857 (or 542851 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The square root of 564544240 is about 23760.1397302289. The cubic root of 564544240 is about 826.4805931646.

The spelling of 564544240 in words is "five hundred sixty-four million, five hundred forty-four thousand, two hundred forty".