6624947980 has 72 divisors (see below), whose sum is σ = 16528252608. Its totient is φ = 2223067392.

The previous prime is 6624947971. The next prime is 6624947983. The reversal of 6624947980 is 897494266.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6624947983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25857 + ... + 117976.

It is an arithmetic number, because the mean of its divisors is an integer number (229559064).

Almost surely, 2^6624947980 is an apocalyptic number.

It is an amenable number.

6624947980 is an abundant number, since it is smaller than the sum of its proper divisors (9903304628).

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

6624947980 is a wasteful number, since it uses less digits than its factorization.

6624947980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143903 (or 143894 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The square root of 6624947980 is about 81393.7834235515. The cubic root of 6624947980 is about 1878.1379613245.

The spelling of 6624947980 in words is "six billion, six hundred twenty-four million, nine hundred forty-seven thousand, nine hundred eighty".