6327044640 has 216 divisors, whose sum is σ = 25116387660. Its totient is φ = 1446165504.

The previous prime is 6327044617. The next prime is 6327044641. The reversal of 6327044640 is 464407236.

6327044640 is a `hidden beast` number, since 6 + 3 + 2 + 7 + 0 + 4 + 4 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6115865616 + 211179024 = 78204^2 + 14532^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6327044595 and 6327044604.

It is not an unprimeable number, because it can be changed into a prime (6327044641) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25726 + ... + 115394.

Almost surely, 2^6327044640 is an apocalyptic number.

6327044640 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 6327044640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12558193830).

6327044640 is an abundant number, since it is smaller than the sum of its proper divisors (18789343020).

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

6327044640 is a wasteful number, since it uses less digits than its factorization.

6327044640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89704 (or 89686 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 6327044640 is about 79542.7221057967. The cubic root of 6327044640 is about 1849.5537896336.

The spelling of 6327044640 in words is "six billion, three hundred twenty-seven million, forty-four thousand, six hundred forty".