83688211 has 4 divisors (see below), whose sum is σ = 83706552. Its totient is φ = 83669872.

The previous prime is 83688173. The next prime is 83688239. The reversal of 83688211 is 11288638.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11288638 = 2 ⋅5644319.

It is a cyclic number.

It is not a de Polignac number, because 83688211 - 2⁷ = 83688083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83688271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3636 + ... + 13438.

It is an arithmetic number, because the mean of its divisors is an integer number (20926638).

Almost surely, 2^83688211 is an apocalyptic number.

83688211 is a deficient number, since it is larger than the sum of its proper divisors (18341).

83688211 is an equidigital number, since it uses as much as digits as its factorization.

83688211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18340.

The product of its digits is 18432, while the sum is 37.

The square root of 83688211 is about 9148.1260922661. The cubic root of 83688211 is about 437.4093827016.

The spelling of 83688211 in words is "eighty-three million, six hundred eighty-eight thousand, two hundred eleven".