6647560 has 16 divisors (see below), whose sum is σ = 14957100. Its totient is φ = 2659008.

The previous prime is 6647551. The next prime is 6647569. The reversal of 6647560 is 657466.

It is an interprime number because it is at equal distance from previous prime (6647551) and next prime (6647569).

It can be written as a sum of positive squares in 2 ways, for example, as 6441444 + 206116 = 2538^2 + 454^2 .

It is not an unprimeable number, because it can be changed into a prime (6647569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83055 + ... + 83134.

Almost surely, 2^6647560 is an apocalyptic number.

It is an amenable number.

6647560 is an abundant number, since it is smaller than the sum of its proper divisors (8309540).

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

6647560 is a wasteful number, since it uses less digits than its factorization.

6647560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166200 (or 166196 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 6647560 is about 2578.2862525329. The cubic root of 6647560 is about 188.0272331154.

The spelling of 6647560 in words is "six million, six hundred forty-seven thousand, five hundred sixty".