216716797 has 8 divisors (see below), whose sum is σ = 244571040. Its totient is φ = 190221360.

The previous prime is 216716791. The next prime is 216716887. The reversal of 216716797 is 797617612.

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 216716797 - 2³ = 216716789 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 (216716791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339363 + ... + 340000.

It is an arithmetic number, because the mean of its divisors is an integer number (30571380).

Almost surely, 2^216716797 is an apocalyptic number.

It is an amenable number.

216716797 is a deficient number, since it is larger than the sum of its proper divisors (27854243).

216716797 is a wasteful number, since it uses less digits than its factorization.

216716797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679403.

The product of its digits is 222264, while the sum is 46.

The square root of 216716797 is about 14721.3041881485. The cubic root of 216716797 is about 600.6629681116.

The spelling of 216716797 in words is "two hundred sixteen million, seven hundred sixteen thousand, seven hundred ninety-seven".