566974621 has 4 divisors (see below), whose sum is σ = 586525500. Its totient is φ = 547423744.

The previous prime is 566974607. The next prime is 566974627. The reversal of 566974621 is 126479665.

566974621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 432182521 + 134792100 = 20789^2 + 11610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566974621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566974627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9775396 + ... + 9775453.

It is an arithmetic number, because the mean of its divisors is an integer number (146631375).

Almost surely, 2^566974621 is an apocalyptic number.

It is an amenable number.

566974621 is a deficient number, since it is larger than the sum of its proper divisors (19550879).

566974621 is a wasteful number, since it uses less digits than its factorization.

566974621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19550878.

The product of its digits is 544320, while the sum is 46.

The square root of 566974621 is about 23811.2288847090. The cubic root of 566974621 is about 827.6649037465.

The spelling of 566974621 in words is "five hundred sixty-six million, nine hundred seventy-four thousand, six hundred twenty-one".