565085648 has 40 divisors (see below), whose sum is σ = 1143100200. Its totient is φ = 270273024.

The previous prime is 565085623. The next prime is 565085659. The reversal of 565085648 is 846580565.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125260864 + 439824784 = 11192^2 + 20972^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44990 + ... + 56162.

It is an arithmetic number, because the mean of its divisors is an integer number (28577505).

Almost surely, 2^565085648 is an apocalyptic number.

565085648 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565085648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571550100).

565085648 is an abundant number, since it is smaller than the sum of its proper divisors (578014552).

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

565085648 is a wasteful number, since it uses less digits than its factorization.

565085648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11319 (or 11313 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 47.

The square root of 565085648 is about 23771.5301989586. The cubic root of 565085648 is about 826.7447119633.

The spelling of 565085648 in words is "five hundred sixty-five million, eighty-five thousand, six hundred forty-eight".