6624693880 has 128 divisors (see below), whose sum is σ = 17670182400. Its totient is φ = 2187053568.

The previous prime is 6624693871. The next prime is 6624693913. The reversal of 6624693880 is 883964266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3791167 + ... + 3792913.

It is an arithmetic number, because the mean of its divisors is an integer number (138048300).

Almost surely, 2^6624693880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6624693880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8835091200).

6624693880 is an abundant number, since it is smaller than the sum of its proper divisors (11045488520).

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

6624693880 is a wasteful number, since it uses less digits than its factorization.

6624693880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2257 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The square root of 6624693880 is about 81392.2224785636. Note that the first 3 decimals coincide. The cubic root of 6624693880 is about 1878.1139490123.

The spelling of 6624693880 in words is "six billion, six hundred twenty-four million, six hundred ninety-three thousand, eight hundred eighty".