565535960 has 256 divisors, whose sum is σ = 1567641600. Its totient is φ = 181350400.

The previous prime is 565535951. The next prime is 565535963. The reversal of 565535960 is 69535565.

It is a happy number.

It is a Cunningham number, because it is equal to 23781²-1.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565535963) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12032657 + ... + 12032703.

It is an arithmetic number, because the mean of its divisors is an integer number (6123600).

Almost surely, 2^565535960 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 565535960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783820800).

565535960 is an abundant number, since it is smaller than the sum of its proper divisors (1002105640).

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

565535960 is a wasteful number, since it uses less digits than its factorization.

565535960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 607500, while the sum is 44.

The square root of 565535960 is about 23780.9999789748. Note that the first 4 decimals coincide. The cubic root of 565535960 is about 826.9642622901.

The spelling of 565535960 in words is "five hundred sixty-five million, five hundred thirty-five thousand, nine hundred sixty".