6668105 has 4 divisors (see below), whose sum is σ = 8001732. Its totient is φ = 5334480.

The previous prime is 6668083. The next prime is 6668113. The reversal of 6668105 is 5018666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5018666 = 2 ⋅2509333.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 5438224 = 1109^2 + 2332^2 .

It is not a de Polignac number, because 6668105 - 2²⁰ = 5619529 is a prime.

It is a Duffinian number.

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, 666806 + ... + 666815.

It is an arithmetic number, because the mean of its divisors is an integer number (2000433).

Almost surely, 2^6668105 is an apocalyptic number.

It is an amenable number.

6668105 is a deficient number, since it is larger than the sum of its proper divisors (1333627).

6668105 is a wasteful number, since it uses less digits than its factorization.

6668105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333626.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 6668105 is about 2582.2674145022. The cubic root of 6668105 is about 188.2207400378.

The spelling of 6668105 in words is "six million, six hundred sixty-eight thousand, one hundred five".