6640630080 has 224 divisors, whose sum is σ = 24161617920. Its totient is φ = 1513728000.

The previous prime is 6640630013. The next prime is 6640630109. The reversal of 6640630080 is 800360466.

It is a tau number, because it is divible by the number of its divisors (224).

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, 2948955 + ... + 2951205.

Almost surely, 2^6640630080 is an apocalyptic number.

6640630080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6640630080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12080808960).

6640630080 is an abundant number, since it is smaller than the sum of its proper divisors (17520987840).

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

6640630080 is a wasteful number, since it uses less digits than its factorization.

6640630080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 6640630080 is about 81490.0612344843. The cubic root of 6640630080 is about 1879.6187245514.

The spelling of 6640630080 in words is "six billion, six hundred forty million, six hundred thirty thousand, eighty".