216685050 has 24 divisors (see below), whose sum is σ = 537379296. Its totient is φ = 57782640.

The previous prime is 216685019. The next prime is 216685057. The reversal of 216685050 is 50586612.

It is not an unprimeable number, because it can be changed into a prime (216685057) 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 11 ways as a sum of consecutive naturals, for example, 722134 + ... + 722433.

It is an arithmetic number, because the mean of its divisors is an integer number (22390804).

Almost surely, 2^216685050 is an apocalyptic number.

216685050 is an abundant number, since it is smaller than the sum of its proper divisors (320694246).

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

216685050 is a wasteful number, since it uses less digits than its factorization.

216685050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444582 (or 1444577 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 216685050 is about 14720.2258814191. The cubic root of 216685050 is about 600.6336361620.

The spelling of 216685050 in words is "two hundred sixteen million, six hundred eighty-five thousand, fifty".