6640612 has 24 divisors (see below), whose sum is σ = 13023360. Its totient is φ = 2936160.

The previous prime is 6640597. The next prime is 6640631. The reversal of 6640612 is 2160466.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412 + ... + 3667.

It is an arithmetic number, because the mean of its divisors is an integer number (542640).

Almost surely, 2^6640612 is an apocalyptic number.

It is an amenable number.

6640612 is a deficient number, since it is larger than the sum of its proper divisors (6382748).

6640612 is a wasteful number, since it uses less digits than its factorization.

6640612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131 (or 4129 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6640612 is about 2576.9384936393. The cubic root of 6640612 is about 187.9617018712.

The spelling of 6640612 in words is "six million, six hundred forty thousand, six hundred twelve".