564291866 has 4 divisors (see below), whose sum is σ = 846437802. Its totient is φ = 282145932.

The previous prime is 564291857. The next prime is 564291869. The reversal of 564291866 is 668192465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 284900641 + 279391225 = 16879^2 + 16715^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 564291866.

It is not an unprimeable number, because it can be changed into a prime (564291869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141072965 + ... + 141072968.

Almost surely, 2^564291866 is an apocalyptic number.

564291866 is a deficient number, since it is larger than the sum of its proper divisors (282145936).

564291866 is a wasteful number, since it uses less digits than its factorization.

564291866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282145935.

The product of its digits is 622080, while the sum is 47.

The square root of 564291866 is about 23754.8282671124. The cubic root of 564291866 is about 826.3574181101.

The spelling of 564291866 in words is "five hundred sixty-four million, two hundred ninety-one thousand, eight hundred sixty-six".