6643047060 has 192 divisors, whose sum is σ = 22304674560. Its totient is φ = 1631715840.

The previous prime is 6643047049. The next prime is 6643047067. The reversal of 6643047060 is 607403466.

6643047060 is a `hidden beast` number, since 6 + 643 + 0 + 4 + 7 + 0 + 6 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643047067) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5145015 + ... + 5146305.

It is an arithmetic number, because the mean of its divisors is an integer number (116170180).

Almost surely, 2^6643047060 is an apocalyptic number.

6643047060 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 6643047060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11152337280).

6643047060 is an abundant number, since it is smaller than the sum of its proper divisors (15661627500).

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

6643047060 is a wasteful number, since it uses less digits than its factorization.

6643047060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 6643047060 is about 81504.8897919628. The cubic root of 6643047060 is about 1879.8467375437.

The spelling of 6643047060 in words is "six billion, six hundred forty-three million, forty-seven thousand, sixty".