566260820 has 54 divisors (see below), whose sum is σ = 1267261002. Its totient is φ = 212499456.

The previous prime is 566260817. The next prime is 566260823. The reversal of 566260820 is 28062665.

It is an interprime number because it is at equal distance from previous prime (566260817) and next prime (566260823).

It can be written as a sum of positive squares in 9 ways, for example, as 332843536 + 233417284 = 18244^2 + 15278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566260823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1808984 + ... + 1809296.

Almost surely, 2^566260820 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 566260820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633630501).

566260820 is an abundant number, since it is smaller than the sum of its proper divisors (701000182).

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

566260820 is a wasteful number, since it uses less digits than its factorization.

566260820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 566260820 is about 23796.2354165528. The cubic root of 566260820 is about 827.3174242682.

The spelling of 566260820 in words is "five hundred sixty-six million, two hundred sixty thousand, eight hundred twenty".