565923540 has 432 divisors, whose sum is σ = 2144947392. Its totient is φ = 110702592.

The previous prime is 565923529. The next prime is 565923541. The reversal of 565923540 is 45329565.

It is a super-2 number, since 2×565923540² = 640538906252263200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565923541) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8446587 + ... + 8446653.

It is an arithmetic number, because the mean of its divisors is an integer number (4965156).

Almost surely, 2^565923540 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 565923540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072473696).

565923540 is an abundant number, since it is smaller than the sum of its proper divisors (1579023852).

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

565923540 is a wasteful number, since it uses less digits than its factorization.

565923540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 565923540 is about 23789.1475257101. The cubic root of 565923540 is about 827.1531342273.

The spelling of 565923540 in words is "five hundred sixty-five million, nine hundred twenty-three thousand, five hundred forty".