6818219 has 4 divisors (see below), whose sum is σ = 7053360. Its totient is φ = 6583080.

The previous prime is 6818197. The next prime is 6818221. The reversal of 6818219 is 9128186.

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 6818219 - 2⁸ = 6817963 is a prime.

It is a super-2 number, since 2×6818219² = 92976220663922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6818239) 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, 117527 + ... + 117584.

It is an arithmetic number, because the mean of its divisors is an integer number (1763340).

Almost surely, 2^6818219 is an apocalyptic number.

6818219 is a deficient number, since it is larger than the sum of its proper divisors (235141).

6818219 is a wasteful number, since it uses less digits than its factorization.

6818219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235140.

The product of its digits is 6912, while the sum is 35.

The square root of 6818219 is about 2611.1719591019. The cubic root of 6818219 is about 189.6226953759.

The spelling of 6818219 in words is "six million, eight hundred eighteen thousand, two hundred nineteen".