216963884 has 12 divisors (see below), whose sum is σ = 384888504. Its totient is φ = 106995744.

The previous prime is 216963881. The next prime is 216963913. The reversal of 216963884 is 488369612.

It is a super-4 number, since 4×216963884⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (216963881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371222 + ... + 371805.

It is an arithmetic number, because the mean of its divisors is an integer number (32074042).

Almost surely, 2^216963884 is an apocalyptic number.

It is an amenable number.

216963884 is a deficient number, since it is larger than the sum of its proper divisors (167924620).

216963884 is a wasteful number, since it uses less digits than its factorization.

216963884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743104 (or 743102 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 216963884 is about 14729.6939547297. The cubic root of 216963884 is about 600.8911609169.

The spelling of 216963884 in words is "two hundred sixteen million, nine hundred sixty-three thousand, eight hundred eighty-four".