6640124 has 12 divisors (see below), whose sum is σ = 11638704. Its totient is φ = 3314784.

The previous prime is 6640121. The next prime is 6640129. The reversal of 6640124 is 4210466.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6640124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3329 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (969892).

Almost surely, 2^6640124 is an apocalyptic number.

It is an amenable number.

6640124 is a deficient number, since it is larger than the sum of its proper divisors (4998580).

6640124 is a wasteful number, since it uses less digits than its factorization.

6640124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6640124 is about 2576.8438058990. The cubic root of 6640124 is about 187.9570974986.

The spelling of 6640124 in words is "six million, six hundred forty thousand, one hundred twenty-four".