230644566 has 12 divisors (see below), whose sum is σ = 499729932. Its totient is φ = 76881516.

The previous prime is 230644549. The next prime is 230644567. The reversal of 230644566 is 665446032.

230644566 is a `hidden beast` number, since 2 + 3 + 0 + 644 + 5 + 6 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 230644566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230644567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6406776 + ... + 6406811.

It is an arithmetic number, because the mean of its divisors is an integer number (41644161).

Almost surely, 2^230644566 is an apocalyptic number.

230644566 is an abundant number, since it is smaller than the sum of its proper divisors (269085366).

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

230644566 is a wasteful number, since it uses less digits than its factorization.

230644566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12813595 (or 12813592 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 230644566 is about 15186.9867320677. The cubic root of 230644566 is about 613.2643826737.

The spelling of 230644566 in words is "two hundred thirty million, six hundred forty-four thousand, five hundred sixty-six".