6640606 has 32 divisors (see below), whose sum is σ = 12192768. Its totient is φ = 2650560.

The previous prime is 6640597. The next prime is 6640631. The reversal of 6640606 is 6060466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12951 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

Almost surely, 2^6640606 is an apocalyptic number.

6640606 is a deficient number, since it is larger than the sum of its proper divisors (5552162).

6640606 is a wasteful number, since it uses less digits than its factorization.

6640606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6640606 is about 2576.9373294669. The cubic root of 6640606 is about 187.9616452615.

The spelling of 6640606 in words is "six million, six hundred forty thousand, six hundred six".