565607540 has 24 divisors (see below), whose sum is σ = 1198677480. Its totient is φ = 224166528.

The previous prime is 565607533. The next prime is 565607557. The reversal of 565607540 is 45706565.

It can be written as a sum of positive squares in 4 ways, for example, as 182466064 + 383141476 = 13508^2 + 19574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 565607494 and 565607503.

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, 127547 + ... + 131906.

It is an arithmetic number, because the mean of its divisors is an integer number (49944895).

Almost surely, 2^565607540 is an apocalyptic number.

It is an amenable number.

565607540 is an abundant number, since it is smaller than the sum of its proper divisors (633069940).

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

565607540 is a wasteful number, since it uses less digits than its factorization.

565607540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259571 (or 259569 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 565607540 is about 23782.5049143273. The cubic root of 565607540 is about 826.9991504957. Note that the first 3 decimals are identical.

The spelling of 565607540 in words is "five hundred sixty-five million, six hundred seven thousand, five hundred forty".