6606440 has 16 divisors (see below), whose sum is σ = 14864580. Its totient is φ = 2642560.

The previous prime is 6606437. The next prime is 6606443. The reversal of 6606440 is 446066.

6606440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6606437) and next prime (6606443).

It can be written as a sum of positive squares in 2 ways, for example, as 5943844 + 662596 = 2438^2 + 814^2 .

It is not an unprimeable number, because it can be changed into a prime (6606443) 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, 82541 + ... + 82620.

Almost surely, 2^6606440 is an apocalyptic number.

It is an amenable number.

6606440 is an abundant number, since it is smaller than the sum of its proper divisors (8258140).

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

6606440 is a wasteful number, since it uses less digits than its factorization.

6606440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165172 (or 165168 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 6606440 is about 2570.2995934326. The cubic root of 6606440 is about 187.6387358392.

The spelling of 6606440 in words is "six million, six hundred six thousand, four hundred forty".