668105 has 8 divisors (see below), whose sum is σ = 819072. Its totient is φ = 522928.

The previous prime is 668093. The next prime is 668111. The reversal of 668105 is 501866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 668105 - 2⁴ = 668089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668105.

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, 1187 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (102384).

2⁶⁶⁸¹⁰⁵ is an apocalyptic number.

It is an amenable number.

668105 is a deficient number, since it is larger than the sum of its proper divisors (150967).

668105 is a wasteful number, since it uses less digits than its factorization.

668105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 668105 is about 817.3769020470. The cubic root of 668105 is about 87.4208263412.

The spelling of 668105 in words is "six hundred sixty-eight thousand, one hundred five".