6644214 has 32 divisors (see below), whose sum is σ = 15130080. Its totient is φ = 2160000.

The previous prime is 6644191. The next prime is 6644227. The reversal of 6644214 is 4124466.

6644214 is a `hidden beast` number, since 6 + 644 + 2 + 14 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714 + ... + 3714.

It is an arithmetic number, because the mean of its divisors is an integer number (472815).

Almost surely, 2^6644214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6644214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7565040).

6644214 is an abundant number, since it is smaller than the sum of its proper divisors (8485866).

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

6644214 is a wasteful number, since it uses less digits than its factorization.

6644214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053 (or 3047 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 6644214 is about 2577.6372902331. The cubic root of 6644214 is about 187.9956804500.

The spelling of 6644214 in words is "six million, six hundred forty-four thousand, two hundred fourteen".