216963863 has 8 divisors (see below), whose sum is σ = 218496096. Its totient is φ = 215437600.

The previous prime is 216963839. The next prime is 216963881. The reversal of 216963863 is 368369612.

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 216963863 - 2¹² = 216959767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266963863) 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, 89933 + ... + 92313.

It is an arithmetic number, because the mean of its divisors is an integer number (27312012).

Almost surely, 2^216963863 is an apocalyptic number.

216963863 is a deficient number, since it is larger than the sum of its proper divisors (1532233).

216963863 is a wasteful number, since it uses less digits than its factorization.

216963863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985.

The product of its digits is 279936, while the sum is 44.

The square root of 216963863 is about 14729.6932418839. The cubic root of 216963863 is about 600.8911415301.

The spelling of 216963863 in words is "two hundred sixteen million, nine hundred sixty-three thousand, eight hundred sixty-three".