565740 has 72 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 129024.

The previous prime is 565727. The next prime is 565769. The reversal of 565740 is 47565.

565740 is a `hidden beast` number, since 5 + 657 + 4 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1036 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (27300).

2⁵⁶⁵⁷⁴⁰ 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 565740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982800).

565740 is an abundant number, since it is smaller than the sum of its proper divisors (1399860).

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

565740 is a wasteful number, since it uses less digits than its factorization.

565740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 565740 is about 752.1568985258. The cubic root of 565740 is about 82.7063703948.

The spelling of 565740 in words is "five hundred sixty-five thousand, seven hundred forty".