6699618 has 16 divisors (see below), whose sum is σ = 14888160. Its totient is φ = 2233188.

The previous prime is 6699617. The next prime is 6699619. The reversal of 6699618 is 8169966.

It is an interprime number because it is at equal distance from previous prime (6699617) and next prime (6699619).

It is not an unprimeable number, because it can be changed into a prime (6699611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61980 + ... + 62087.

It is an arithmetic number, because the mean of its divisors is an integer number (930510).

Almost surely, 2^6699618 is an apocalyptic number.

6699618 is an abundant number, since it is smaller than the sum of its proper divisors (8188542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6699618 is a wasteful number, since it uses less digits than its factorization.

6699618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124078 (or 124072 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 6699618 is about 2588.3620303196. The cubic root of 6699618 is about 188.5167802092.

The spelling of 6699618 in words is "six million, six hundred ninety-nine thousand, six hundred eighteen".