6647130 has 64 divisors (see below), whose sum is σ = 20263680. Its totient is φ = 1518912.

The previous prime is 6647129. The next prime is 6647141. The reversal of 6647130 is 317466.

6647130 is a `hidden beast` number, since 6 + 647 + 13 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 6647094 and 6647103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (316620).

Almost surely, 2^6647130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6647130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10131840).

6647130 is an abundant number, since it is smaller than the sum of its proper divisors (13616550).

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

6647130 is a wasteful number, since it uses less digits than its factorization.

6647130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540 (or 3534 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 6647130 is about 2578.2028624606. The cubic root of 6647130 is about 188.0231788231.

The spelling of 6647130 in words is "six million, six hundred forty-seven thousand, one hundred thirty".