6698618 has 4 divisors (see below), whose sum is σ = 10047930. Its totient is φ = 3349308.

The previous prime is 6698611. The next prime is 6698633. The reversal of 6698618 is 8168966.

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., 5414929 + 1283689 = 2327^2 + 1133^2 .

It is not an unprimeable number, because it can be changed into a prime (6698611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1674653 + ... + 1674656.

Almost surely, 2^6698618 is an apocalyptic number.

6698618 is a deficient number, since it is larger than the sum of its proper divisors (3349312).

6698618 is a wasteful number, since it uses less digits than its factorization.

6698618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349311.

The product of its digits is 124416, while the sum is 44.

The square root of 6698618 is about 2588.1688507514. The cubic root of 6698618 is about 188.5074002634.

The spelling of 6698618 in words is "six million, six hundred ninety-eight thousand, six hundred eighteen".