565712640 has 144 divisors (see below), whose sum is σ = 2007616800. Its totient is φ = 150847488.

The previous prime is 565712639. The next prime is 565712659. The reversal of 565712640 is 46217565.

It is a happy number.

565712640 is a `hidden beast` number, since 5 + 6 + 5 + 7 + 1 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 565712595 and 565712604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26376 + ... + 42744.

Almost surely, 2^565712640 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 565712640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003808400).

565712640 is an abundant number, since it is smaller than the sum of its proper divisors (1441904160).

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

565712640 is a wasteful number, since it uses less digits than its factorization.

565712640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16399 (or 16379 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 565712640 is about 23784.7144191390. The cubic root of 565712640 is about 827.0503710692.

The spelling of 565712640 in words is "five hundred sixty-five million, seven hundred twelve thousand, six hundred forty".