216714823 has 4 divisors (see below), whose sum is σ = 233385208. Its totient is φ = 200044440.

The previous prime is 216714821. The next prime is 216714859. The reversal of 216714823 is 328417612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216714823 - 2¹ = 216714821 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 (216714821) 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, 8335173 + ... + 8335198.

It is an arithmetic number, because the mean of its divisors is an integer number (58346302).

Almost surely, 2^216714823 is an apocalyptic number.

216714823 is a deficient number, since it is larger than the sum of its proper divisors (16670385).

216714823 is a wasteful number, since it uses less digits than its factorization.

216714823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16670384.

The product of its digits is 16128, while the sum is 34.

The square root of 216714823 is about 14721.2371423057. The cubic root of 216714823 is about 600.6611443608.

The spelling of 216714823 in words is "two hundred sixteen million, seven hundred fourteen thousand, eight hundred twenty-three".