216838713 has 64 divisors (see below), whose sum is σ = 374976000. Its totient is φ = 108380160.

The previous prime is 216838693. The next prime is 216838717. The reversal of 216838713 is 317838612.

It is not a de Polignac number, because 216838713 - 2⁹ = 216838201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (216838717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 482713 + ... + 483161.

It is an arithmetic number, because the mean of its divisors is an integer number (5859000).

Almost surely, 2^216838713 is an apocalyptic number.

It is an amenable number.

216838713 is a deficient number, since it is larger than the sum of its proper divisors (158137287).

216838713 is a wasteful number, since it uses less digits than its factorization.

216838713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 48384, while the sum is 39.

The square root of 216838713 is about 14725.4444075552. Note that the first 4 decimals coincide. The cubic root of 216838713 is about 600.7755831305.

The spelling of 216838713 in words is "two hundred sixteen million, eight hundred thirty-eight thousand, seven hundred thirteen".