216502663 has 8 divisors (see below), whose sum is σ = 245428400. Its totient is φ = 189330048.

The previous prime is 216502639. The next prime is 216502679. The reversal of 216502663 is 366205612.

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 216502663 - 2¹³ = 216494471 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 (216502063) 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, 438018 + ... + 438511.

It is an arithmetic number, because the mean of its divisors is an integer number (30678550).

Almost surely, 2^216502663 is an apocalyptic number.

216502663 is a deficient number, since it is larger than the sum of its proper divisors (28925737).

216502663 is a wasteful number, since it uses less digits than its factorization.

216502663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876561.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 216502663 is about 14714.0294617076. The cubic root of 216502663 is about 600.4650681300.

The spelling of 216502663 in words is "two hundred sixteen million, five hundred two thousand, six hundred sixty-three".