216576663 has 8 divisors (see below), whose sum is σ = 289358976. Its totient is φ = 144089400.

The previous prime is 216576643. The next prime is 216576673. The reversal of 216576663 is 366675612.

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

It is not a de Polignac number, because 216576663 - 2²⁴ = 199799447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216576643) 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, 72043 + ... + 74988.

It is an arithmetic number, because the mean of its divisors is an integer number (36169872).

Almost surely, 2^216576663 is an apocalyptic number.

216576663 is a deficient number, since it is larger than the sum of its proper divisors (72782313).

216576663 is a wasteful number, since it uses less digits than its factorization.

216576663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147525.

The product of its digits is 272160, while the sum is 42.

The square root of 216576663 is about 14716.5438537722. The cubic root of 216576663 is about 600.5334727597.

The spelling of 216576663 in words is "two hundred sixteen million, five hundred seventy-six thousand, six hundred sixty-three".