6640108 has 12 divisors (see below), whose sum is σ = 11767840. Its totient is φ = 3277872.

The previous prime is 6640093. The next prime is 6640111. The reversal of 6640108 is 8010466.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10191 + ... + 10822.

Almost surely, 2^6640108 is an apocalyptic number.

It is an amenable number.

6640108 is a deficient number, since it is larger than the sum of its proper divisors (5127732).

6640108 is a wasteful number, since it uses less digits than its factorization.

6640108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21096 (or 21094 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 6640108 is about 2576.8407013240. The cubic root of 6640108 is about 187.9569465317.

The spelling of 6640108 in words is "six million, six hundred forty thousand, one hundred eight".