6664305 has 8 divisors (see below), whose sum is σ = 10662912. Its totient is φ = 3554288.

The previous prime is 6664279. The next prime is 6664309. The reversal of 6664305 is 5034666.

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

It is a cyclic number.

It is not a de Polignac number, because 6664305 - 2⁹ = 6663793 is a prime.

It is a super-2 number, since 2×6664305² = 88825922266050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6664309) 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, 222129 + ... + 222158.

It is an arithmetic number, because the mean of its divisors is an integer number (1332864).

Almost surely, 2^6664305 is an apocalyptic number.

It is an amenable number.

6664305 is a deficient number, since it is larger than the sum of its proper divisors (3998607).

6664305 is a wasteful number, since it uses less digits than its factorization.

6664305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444295.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 6664305 is about 2581.5315221783. The cubic root of 6664305 is about 188.1849790172.

It can be divided in two parts, 666430 and 5, that added together give a triangular number (666435 = T₁₁₅₄).

The spelling of 6664305 in words is "six million, six hundred sixty-four thousand, three hundred five".