216795903 has 8 divisors (see below), whose sum is σ = 290324400. Its totient is φ = 143899008.

The previous prime is 216795899. The next prime is 216795919. The reversal of 216795903 is 309597612.

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

It is not a de Polignac number, because 216795903 - 2² = 216795899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216795703) 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, 157098 + ... + 158471.

It is an arithmetic number, because the mean of its divisors is an integer number (36290550).

Almost surely, 2^216795903 is an apocalyptic number.

216795903 is a deficient number, since it is larger than the sum of its proper divisors (73528497).

216795903 is a wasteful number, since it uses less digits than its factorization.

216795903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315801.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 216795903 is about 14723.9907294184. The cubic root of 216795903 is about 600.7360439186.

The spelling of 216795903 in words is "two hundred sixteen million, seven hundred ninety-five thousand, nine hundred three".