216845996 has 6 divisors (see below), whose sum is σ = 379480500. Its totient is φ = 108422996.

The previous prime is 216845971. The next prime is 216846037. The reversal of 216845996 is 699548612.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27105746 + ... + 27105753.

It is an arithmetic number, because the mean of its divisors is an integer number (63246750).

Almost surely, 2^216845996 is an apocalyptic number.

It is an amenable number.

216845996 is a deficient number, since it is larger than the sum of its proper divisors (162634504).

216845996 is a wasteful number, since it uses less digits than its factorization.

216845996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54211503 (or 54211501 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 216845996 is about 14725.6916985247. The cubic root of 216845996 is about 600.7823091736.

The spelling of 216845996 in words is "two hundred sixteen million, eight hundred forty-five thousand, nine hundred ninety-six".