216316633 has 8 divisors (see below), whose sum is σ = 243085248. Its totient is φ = 190995024.

The previous prime is 216316631. The next prime is 216316637. The reversal of 216316633 is 336613612.

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

It is a cyclic number.

It is not a de Polignac number, because 216316633 - 2¹ = 216316631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216316595 and 216316604.

It is not an unprimeable number, because it can be changed into a prime (216316631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361435 + ... + 362032.

It is an arithmetic number, because the mean of its divisors is an integer number (30385656).

Almost surely, 2^216316633 is an apocalyptic number.

216316633 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216316633 is a deficient number, since it is larger than the sum of its proper divisors (26768615).

216316633 is a wasteful number, since it uses less digits than its factorization.

216316633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723503.

The product of its digits is 11664, while the sum is 31.

The square root of 216316633 is about 14707.7065853246. The cubic root of 216316633 is about 600.2930355640.

The spelling of 216316633 in words is "two hundred sixteen million, three hundred sixteen thousand, six hundred thirty-three".