506646243 has 24 divisors (see below), whose sum is σ = 741664560. Its totient is φ = 333253440.

The previous prime is 506646227. The next prime is 506646251. The reversal of 506646243 is 342646605.

506646243 is a `hidden beast` number, since 5 + 0 + 6 + 646 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 506646243 - 2⁴ = 506646227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 506646198 and 506646207.

It is not an unprimeable number, because it can be changed into a prime (506646263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215253 + ... + 217593.

It is an arithmetic number, because the mean of its divisors is an integer number (30902690).

Almost surely, 2^506646243 is an apocalyptic number.

506646243 is a deficient number, since it is larger than the sum of its proper divisors (235018317).

506646243 is a wasteful number, since it uses less digits than its factorization.

506646243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659 (or 2656 counting only the distinct ones).

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

The square root of 506646243 is about 22508.8036776724. The cubic root of 506646243 is about 797.2018089657.

The spelling of 506646243 in words is "five hundred six million, six hundred forty-six thousand, two hundred forty-three".