566251640 has 64 divisors (see below), whose sum is σ = 1353283200. Its totient is φ = 212502528.

The previous prime is 566251633. The next prime is 566251669. The reversal of 566251640 is 46152665.

It is a self number, because there is not a number n which added to its sum of digits gives 566251640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248426 + ... + 250694.

It is an arithmetic number, because the mean of its divisors is an integer number (21145050).

Almost surely, 2^566251640 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 566251640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676641600).

566251640 is an abundant number, since it is smaller than the sum of its proper divisors (787031560).

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

566251640 is a wasteful number, since it uses less digits than its factorization.

566251640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 566251640 is about 23796.0425281180. The cubic root of 566251640 is about 827.3129535280.

The spelling of 566251640 in words is "five hundred sixty-six million, two hundred fifty-one thousand, six hundred forty".