20068105 has 4 divisors (see below), whose sum is σ = 24081732. Its totient is φ = 16054480.

The previous prime is 20068093. The next prime is 20068117. The reversal of 20068105 is 50186002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20068093) and next prime (20068117).

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 7733961 = 3512^2 + 2781^2 .

It is not a de Polignac number, because 20068105 - 2⁵ = 20068073 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006806 + ... + 2006815.

It is an arithmetic number, because the mean of its divisors is an integer number (6020433).

Almost surely, 2^20068105 is an apocalyptic number.

It is an amenable number.

20068105 is a deficient number, since it is larger than the sum of its proper divisors (4013627).

20068105 is an equidigital number, since it uses as much as digits as its factorization.

20068105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013626.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 20068105 is about 4479.7438542845. The cubic root of 20068105 is about 271.7495216098.

The spelling of 20068105 in words is "twenty million, sixty-eight thousand, one hundred five".