6644067 has 8 divisors (see below), whose sum is σ = 8965824. Its totient is φ = 4375848.

The previous prime is 6644047. The next prime is 6644069. The reversal of 6644067 is 7604466.

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

It is not a de Polignac number, because 6644067 - 2⁸ = 6643811 is a prime.

It is an Ulam number.

6644067 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6644069) 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, 13093 + ... + 13590.

It is an arithmetic number, because the mean of its divisors is an integer number (1120728).

Almost surely, 2^6644067 is an apocalyptic number.

6644067 is a deficient number, since it is larger than the sum of its proper divisors (2321757).

6644067 is a wasteful number, since it uses less digits than its factorization.

6644067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26769.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 6644067 is about 2577.6087755903. The cubic root of 6644067 is about 187.9942940022.

The spelling of 6644067 in words is "six million, six hundred forty-four thousand, sixty-seven".