6648998720 has 112 divisors (see below), whose sum is σ = 19486766208. Its totient is φ = 2104289280.

The previous prime is 6648998717. The next prime is 6648998749. The reversal of 6648998720 is 278998466.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 6648998720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85046 + ... + 143285.

It is an arithmetic number, because the mean of its divisors is an integer number (173988984).

Almost surely, 2^6648998720 is an apocalyptic number.

It is an amenable number.

6648998720 is an abundant number, since it is smaller than the sum of its proper divisors (12837767488).

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

6648998720 is a wasteful number, since it uses less digits than its factorization.

6648998720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228368 (or 228358 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 59.

The square root of 6648998720 is about 81541.3926788107. The cubic root of 6648998720 is about 1880.4079694070.

The spelling of 6648998720 in words is "six billion, six hundred forty-eight million, nine hundred ninety-eight thousand, seven hundred twenty".