216516733 has 8 divisors (see below), whose sum is σ = 230738688. Its totient is φ = 202695504.

The previous prime is 216516691. The next prime is 216516757. The reversal of 216516733 is 337615612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216516733 - 2²¹ = 214419581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216516793) 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 7 ways as a sum of consecutive naturals, for example, 99066 + ... + 101227.

It is an arithmetic number, because the mean of its divisors is an integer number (28842336).

Almost surely, 2^216516733 is an apocalyptic number.

216516733 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216516733 is a deficient number, since it is larger than the sum of its proper divisors (14221955).

216516733 is a wasteful number, since it uses less digits than its factorization.

216516733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200363.

The product of its digits is 22680, while the sum is 34.

The square root of 216516733 is about 14714.5075690626. The cubic root of 216516733 is about 600.4780754534.

The spelling of 216516733 in words is "two hundred sixteen million, five hundred sixteen thousand, seven hundred thirty-three".