6446624352 has 48 divisors (see below), whose sum is σ = 19339875072. Its totient is φ = 1841892480.

The previous prime is 6446624351. The next prime is 6446624357. The reversal of 6446624352 is 2534266446.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446624351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4795924 + ... + 4797267.

It is an arithmetic number, because the mean of its divisors is an integer number (402914064).

Almost surely, 2^6446624352 is an apocalyptic number.

It is an amenable number.

6446624352 is an abundant number, since it is smaller than the sum of its proper divisors (12893250720).

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

6446624352 is a wasteful number, since it uses less digits than its factorization.

6446624352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9593211 (or 9593203 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

The square root of 6446624352 is about 80290.8734041423. The cubic root of 6446624352 is about 1861.1331931551.

The spelling of 6446624352 in words is "six billion, four hundred forty-six million, six hundred twenty-four thousand, three hundred fifty-two".