505216683 has 18 divisors (see below), whose sum is σ = 757796364. Its totient is φ = 336806748.

The previous prime is 505216667. The next prime is 505216687. The reversal of 505216683 is 386612505.

505216683 is a `hidden beast` number, since 50 + 521 + 6 + 6 + 83 = 666.

It is not a de Polignac number, because 505216683 - 2⁴ = 505216667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505216687) 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 17 ways as a sum of consecutive naturals, for example, 31941 + ... + 45062.

It is an arithmetic number, because the mean of its divisors is an integer number (42099798).

Almost surely, 2^505216683 is an apocalyptic number.

505216683 is a deficient number, since it is larger than the sum of its proper divisors (252579681).

505216683 is an frugal number, since it uses more digits than its factorization.

505216683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77027 (or 77006 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 505216683 is about 22477.0256706709. The cubic root of 505216683 is about 796.4513041186.

The spelling of 505216683 in words is "five hundred five million, two hundred sixteen thousand, six hundred eighty-three".