6624447 has 8 divisors (see below), whose sum is σ = 8902656. Its totient is φ = 4381272.

The previous prime is 6624439. The next prime is 6624463. The reversal of 6624447 is 7444266.

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

It is not a de Polignac number, because 6624447 - 2³ = 6624439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6624427) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8313 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (1112832).

Almost surely, 2^6624447 is an apocalyptic number.

6624447 is a deficient number, since it is larger than the sum of its proper divisors (2278209).

6624447 is a wasteful number, since it uses less digits than its factorization.

6624447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17517.

The product of its digits is 32256, while the sum is 33.

The square root of 6624447 is about 2573.8001087886. The cubic root of 6624447 is about 187.8090618398.

The spelling of 6624447 in words is "six million, six hundred twenty-four thousand, four hundred forty-seven".