6664207 has 4 divisors (see below), whose sum is σ = 7270056. Its totient is φ = 6058360.

The previous prime is 6664201. The next prime is 6664213. The reversal of 6664207 is 7024666.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6664201) and next prime (6664213).

It is not a de Polignac number, because 6664207 - 2³ = 6664199 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664201) 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, 302908 + ... + 302929.

It is an arithmetic number, because the mean of its divisors is an integer number (1817514).

Almost surely, 2^6664207 is an apocalyptic number.

6664207 is a deficient number, since it is larger than the sum of its proper divisors (605849).

6664207 is a wasteful number, since it uses less digits than its factorization.

6664207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605848.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6664207 is about 2581.5125411278. The cubic root of 6664207 is about 188.1840565795.

The spelling of 6664207 in words is "six million, six hundred sixty-four thousand, two hundred seven".