565648 has 10 divisors (see below), whose sum is σ = 1095974. Its totient is φ = 282816.

The previous prime is 565637. The next prime is 565651. The reversal of 565648 is 846565.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 144 = 752^2 + 12^2 .

It is a super-3 number, since 3×565648³ = 542950231228133376, which contains 333 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565648.

It is an unprimeable number.

565648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17661 + ... + 17692.

2⁵⁶⁵⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

565648 is a deficient number, since it is larger than the sum of its proper divisors (530326).

565648 is a wasteful number, since it uses less digits than its factorization.

565648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35361 (or 35355 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 565648 is about 752.0957385865. The cubic root of 565648 is about 82.7018869462.

The spelling of 565648 in words is "five hundred sixty-five thousand, six hundred forty-eight".