6444064 has 24 divisors (see below), whose sum is σ = 13840848. Its totient is φ = 2928960.

The previous prime is 6444049. The next prime is 6444079. The reversal of 6444064 is 4604446.

It is an interprime number because it is at equal distance from previous prime (6444049) and next prime (6444079).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8802 + ... + 9505.

It is an arithmetic number, because the mean of its divisors is an integer number (576702).

Almost surely, 2^6444064 is an apocalyptic number.

It is an amenable number.

6444064 is an abundant number, since it is smaller than the sum of its proper divisors (7396784).

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

6444064 is a wasteful number, since it uses less digits than its factorization.

6444064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18328 (or 18320 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 6444064 is about 2538.5161019777. The cubic root of 6444064 is about 186.0886770282.

The spelling of 6444064 in words is "six million, four hundred forty-four thousand, sixty-four".