3966618 has 8 divisors (see below), whose sum is σ = 7933248. Its totient is φ = 1322204.

The previous prime is 3966617. The next prime is 3966623. The reversal of 3966618 is 8166693.

It is a happy number.

3966618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

3966618 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3966617) 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 3 ways as a sum of consecutive naturals, for example, 330546 + ... + 330557.

It is an arithmetic number, because the mean of its divisors is an integer number (991656).

Almost surely, 2^3966618 is an apocalyptic number.

3966618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3966618 is a wasteful number, since it uses less digits than its factorization.

3966618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661108.

The product of its digits is 46656, while the sum is 39.

The square root of 3966618 is about 1991.6370151210. The cubic root of 3966618 is about 158.2972825279.

The spelling of 3966618 in words is "three million, nine hundred sixty-six thousand, six hundred eighteen".