506438866 has 16 divisors (see below), whose sum is σ = 764650656. Its totient is φ = 251561376.

The previous prime is 506438851. The next prime is 506438879. The reversal of 506438866 is 668834605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211870 + ... + 214246.

It is an arithmetic number, because the mean of its divisors is an integer number (47790666).

Almost surely, 2^506438866 is an apocalyptic number.

506438866 is a deficient number, since it is larger than the sum of its proper divisors (258211790).

506438866 is a wasteful number, since it uses less digits than its factorization.

506438866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 506438866 is about 22504.1966308509. The cubic root of 506438866 is about 797.0930257117.

The spelling of 506438866 in words is "five hundred six million, four hundred thirty-eight thousand, eight hundred sixty-six".