6820198111 has 4 divisors (see below), whose sum is σ = 6872260824. Its totient is φ = 6768135400.

The previous prime is 6820198087. The next prime is 6820198117. The reversal of 6820198111 is 1118910286.

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 6820198111 - 2¹⁷ = 6820067039 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 (6820198117) 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, 26031160 + ... + 26031421.

It is an arithmetic number, because the mean of its divisors is an integer number (1718065206).

Almost surely, 2^6820198111 is an apocalyptic number.

6820198111 is a deficient number, since it is larger than the sum of its proper divisors (52062713).

6820198111 is a wasteful number, since it uses less digits than its factorization.

6820198111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52062712.

The product of its (nonzero) digits is 6912, while the sum is 37.

The square root of 6820198111 is about 82584.4907413008. The cubic root of 6820198111 is about 1896.4104073641.

The spelling of 6820198111 in words is "six billion, eight hundred twenty million, one hundred ninety-eight thousand, one hundred eleven".