6664618 has 8 divisors (see below), whose sum is σ = 10431648. Its totient is φ = 3187404.

The previous prime is 6664607. The next prime is 6664631. The reversal of 6664618 is 8164666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72396 + ... + 72487.

It is an arithmetic number, because the mean of its divisors is an integer number (1303956).

Almost surely, 2^6664618 is an apocalyptic number.

6664618 is a deficient number, since it is larger than the sum of its proper divisors (3767030).

6664618 is a wasteful number, since it uses less digits than its factorization.

6664618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144908.

The product of its digits is 41472, while the sum is 37.

The square root of 6664618 is about 2581.5921443946. The cubic root of 6664618 is about 188.1879251096.

The spelling of 6664618 in words is "six million, six hundred sixty-four thousand, six hundred eighteen".