565499988 has 96 divisors (see below), whose sum is σ = 1537643520. Its totient is φ = 179388000.

The previous prime is 565499981. The next prime is 565500007. The reversal of 565499988 is 889994565.

565499988 is a `hidden beast` number, since 5 + 6 + 549 + 9 + 9 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565499981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623031 + ... + 623937.

It is an arithmetic number, because the mean of its divisors is an integer number (16017120).

Almost surely, 2^565499988 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 565499988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768821760).

565499988 is an abundant number, since it is smaller than the sum of its proper divisors (972143532).

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

565499988 is a wasteful number, since it uses less digits than its factorization.

565499988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1186 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The square root of 565499988 is about 23780.2436488779. The cubic root of 565499988 is about 826.9467283687.

The spelling of 565499988 in words is "five hundred sixty-five million, four hundred ninety-nine thousand, nine hundred eighty-eight".