216562233 has 8 divisors (see below), whose sum is σ = 295464928. Its totient is φ = 141017184.

The previous prime is 216562217. The next prime is 216562243. The reversal of 216562233 is 332265612.

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

It is not a de Polignac number, because 216562233 - 2⁴ = 216562217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216562233.

It is not an unprimeable number, because it can be changed into a prime (216562243) 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, 839260 + ... + 839517.

It is an arithmetic number, because the mean of its divisors is an integer number (36933116).

Almost surely, 2^216562233 is an apocalyptic number.

It is an amenable number.

216562233 is a deficient number, since it is larger than the sum of its proper divisors (78902695).

216562233 is a wasteful number, since it uses less digits than its factorization.

216562233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678823.

The product of its digits is 12960, while the sum is 30.

The square root of 216562233 is about 14716.0535810386. The cubic root of 216562233 is about 600.5201350800.

The spelling of 216562233 in words is "two hundred sixteen million, five hundred sixty-two thousand, two hundred thirty-three".