6218 has 4 divisors (see below), whose sum is σ = 9330. Its totient is φ = 3108.

The previous prime is 6217. The next prime is 6221. The reversal of 6218 is 8126.

6218 = 17² + 18² + ... + 28².

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

It can be written as a sum of positive squares in only one way, i.e., 5929 + 289 = 77^2 + 17^2 .

It is a Curzon number.

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 6196 and 6205.

It is not an unprimeable number, because it can be changed into a prime (6211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553 + ... + 1556.

2⁶²¹⁸ is an apocalyptic number.

6218 is a deficient number, since it is larger than the sum of its proper divisors (3112).

6218 is a wasteful number, since it uses less digits than its factorization.

6218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111.

The product of its digits is 96, while the sum is 17.

The square root of 6218 is about 78.8542960149. The cubic root of 6218 is about 18.3886666187.

The spelling of 6218 in words is "six thousand, two hundred eighteen".