565641630 has 80 divisors (see below), whose sum is σ = 1525645440. Its totient is φ = 150372288.

The previous prime is 565641619. The next prime is 565641631. The reversal of 565641630 is 36146565.

565641630 is a `hidden beast` number, since 5 + 6 + 5 + 641 + 6 + 3 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565641631) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 320691 + ... + 322449.

It is an arithmetic number, because the mean of its divisors is an integer number (19070568).

Almost surely, 2^565641630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565641630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762822720).

565641630 is an abundant number, since it is smaller than the sum of its proper divisors (960003810).

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

565641630 is a wasteful number, since it uses less digits than its factorization.

565641630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 565641630 is about 23783.2216068387. The cubic root of 565641630 is about 827.0157649812.

The spelling of 565641630 in words is "five hundred sixty-five million, six hundred forty-one thousand, six hundred thirty".