566645604 has 120 divisors (see below), whose sum is σ = 1569814848. Its totient is φ = 159042240.

The previous prime is 566645603. The next prime is 566645623. The reversal of 566645604 is 406546665.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (566645603) 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 39 ways as a sum of consecutive naturals, for example, 2045514 + ... + 2045790.

Almost surely, 2^566645604 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 566645604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784907424).

566645604 is an abundant number, since it is smaller than the sum of its proper divisors (1003169244).

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

566645604 is a wasteful number, since it uses less digits than its factorization.

566645604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 566645604 is about 23804.3190198754. The cubic root of 566645604 is about 827.5047739948.

The spelling of 566645604 in words is "five hundred sixty-six million, six hundred forty-five thousand, six hundred four".