566637840 has 240 divisors, whose sum is σ = 2005585920. Its totient is φ = 143170560.

The previous prime is 566637839. The next prime is 566637859. The reversal of 566637840 is 48736665.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1182721 + ... + 1183199.

It is an arithmetic number, because the mean of its divisors is an integer number (8356608).

Almost surely, 2^566637840 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 566637840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002792960).

566637840 is an abundant number, since it is smaller than the sum of its proper divisors (1438948080).

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

566637840 is a wasteful number, since it uses less digits than its factorization.

566637840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 566637840 is about 23804.1559396673. The cubic root of 566637840 is about 827.5009945741.

The spelling of 566637840 in words is "five hundred sixty-six million, six hundred thirty-seven thousand, eight hundred forty".