506212866 has 24 divisors (see below), whose sum is σ = 1099703280. Its totient is φ = 168290136.

The previous prime is 506212849. The next prime is 506212871. The reversal of 506212866 is 668212605.

506212866 is a `hidden beast` number, since 5 + 0 + 621 + 28 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 506212866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30280 + ... + 43923.

It is an arithmetic number, because the mean of its divisors is an integer number (45820970).

Almost surely, 2^506212866 is an apocalyptic number.

506212866 is an abundant number, since it is smaller than the sum of its proper divisors (593490414).

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

506212866 is a wasteful number, since it uses less digits than its factorization.

506212866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74590 (or 74587 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 506212866 is about 22499.1747848671. The cubic root of 506212866 is about 796.9744396138.

The spelling of 506212866 in words is "five hundred six million, two hundred twelve thousand, eight hundred sixty-six".