505216684 has 48 divisors (see below), whose sum is σ = 1030176000. Its totient is φ = 212331456.

The previous prime is 505216667. The next prime is 505216687. The reversal of 505216684 is 486612505.

It is not an unprimeable number, because it can be changed into a prime (505216687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345547 + ... + 347005.

It is an arithmetic number, because the mean of its divisors is an integer number (21462000).

Almost surely, 2^505216684 is an apocalyptic number.

It is an amenable number.

505216684 is an abundant number, since it is smaller than the sum of its proper divisors (524959316).

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

505216684 is a wasteful number, since it uses less digits than its factorization.

505216684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 505216684 is about 22477.0256929159. The cubic root of 505216684 is about 796.4513046441.

It can be divided in two parts, 5052 and 16684, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 505216684 in words is "five hundred five million, two hundred sixteen thousand, six hundred eighty-four".