6677218 has 4 divisors (see below), whose sum is σ = 10015830. Its totient is φ = 3338608.

The previous prime is 6677213. The next prime is 6677233. The reversal of 6677218 is 8127766.

It is a happy number.

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., 6671889 + 5329 = 2583^2 + 73^2 .

It is not an unprimeable number, because it can be changed into a prime (6677213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1669303 + ... + 1669306.

Almost surely, 2^6677218 is an apocalyptic number.

6677218 is a deficient number, since it is larger than the sum of its proper divisors (3338612).

6677218 is a wasteful number, since it uses less digits than its factorization.

6677218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338611.

The product of its digits is 28224, while the sum is 37.

The square root of 6677218 is about 2584.0313465591. The cubic root of 6677218 is about 188.3064452873.

It can be divided in two parts, 66 and 77218, that added together give a square (77284 = 278²).

The spelling of 6677218 in words is "six million, six hundred seventy-seven thousand, two hundred eighteen".