6677648218 has 4 divisors (see below), whose sum is σ = 10016472330. Its totient is φ = 3338824108.

The previous prime is 6677648191. The next prime is 6677648227. The reversal of 6677648218 is 8128467766.

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., 4078993689 + 2598654529 = 63867^2 + 50977^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1669412053 + ... + 1669412056.

Almost surely, 2^6677648218 is an apocalyptic number.

6677648218 is a deficient number, since it is larger than the sum of its proper divisors (3338824112).

6677648218 is a wasteful number, since it uses less digits than its factorization.

6677648218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338824111.

The product of its digits is 5419008, while the sum is 55.

The square root of 6677648218 is about 81716.8784156615. The cubic root of 6677648218 is about 1883.1048944078.

The spelling of 6677648218 in words is "six billion, six hundred seventy-seven million, six hundred forty-eight thousand, two hundred eighteen".