564660440 has 32 divisors (see below), whose sum is σ = 1345222080. Its totient is φ = 212577792.

The previous prime is 564660431. The next prime is 564660461. The reversal of 564660440 is 44066465.

It is a self number, because there is not a number n which added to its sum of digits gives 564660440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414512 + ... + 415871.

It is an arithmetic number, because the mean of its divisors is an integer number (42038190).

Almost surely, 2^564660440 is an apocalyptic number.

It is an amenable number.

564660440 is an abundant number, since it is smaller than the sum of its proper divisors (780561640).

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

564660440 is a wasteful number, since it uses less digits than its factorization.

564660440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830411 (or 830407 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 564660440 is about 23762.5848762293. The cubic root of 564660440 is about 826.5372940392.

The spelling of 564660440 in words is "five hundred sixty-four million, six hundred sixty thousand, four hundred forty".