566721140 has 24 divisors (see below), whose sum is σ = 1195062792. Its totient is φ = 225745920.

The previous prime is 566721139. The next prime is 566721143. The reversal of 566721140 is 41127665.

It can be written as a sum of positive squares in 4 ways, for example, as 258437776 + 308283364 = 16076^2 + 17558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 566721097 and 566721106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566721143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53969 + ... + 63608.

It is an arithmetic number, because the mean of its divisors is an integer number (49794283).

Almost surely, 2^566721140 is an apocalyptic number.

It is an amenable number.

566721140 is an abundant number, since it is smaller than the sum of its proper divisors (628341652).

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

566721140 is a wasteful number, since it uses less digits than its factorization.

566721140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117827 (or 117825 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 566721140 is about 23805.9055698371. The cubic root of 566721140 is about 827.5415421988.

The spelling of 566721140 in words is "five hundred sixty-six million, seven hundred twenty-one thousand, one hundred forty".