6648218 has 4 divisors (see below), whose sum is σ = 9972330. Its totient is φ = 3324108.

The previous prime is 6648203. The next prime is 6648251. The reversal of 6648218 is 8128466.

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., 6620329 + 27889 = 2573^2 + 167^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662053 + ... + 1662056.

Almost surely, 2^6648218 is an apocalyptic number.

6648218 is a deficient number, since it is larger than the sum of its proper divisors (3324112).

6648218 is a wasteful number, since it uses less digits than its factorization.

6648218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324111.

The product of its digits is 18432, while the sum is 35.

The square root of 6648218 is about 2578.4138535154. The cubic root of 6648218 is about 188.0334367870.

It can be divided in two parts, 66 and 48218, that added together give a palindrome (48284).

The spelling of 6648218 in words is "six million, six hundred forty-eight thousand, two hundred eighteen".