20068505 has 8 divisors (see below), whose sum is σ = 24421824. Its totient is φ = 15828400.

The previous prime is 20068471. The next prime is 20068511. The reversal of 20068505 is 50586002.

20068505 is nontrivially palindromic in base 2.

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

It is not a de Polignac number, because 20068505 - 2⁸ = 20068249 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 27911 + ... + 28620.

It is an arithmetic number, because the mean of its divisors is an integer number (3052728).

Almost surely, 2^20068505 is an apocalyptic number.

It is an amenable number.

20068505 is a deficient number, since it is larger than the sum of its proper divisors (4353319).

20068505 is an equidigital number, since it uses as much as digits as its factorization.

20068505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56607.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 20068505 is about 4479.7884994718. The cubic root of 20068505 is about 271.7513271131.

The spelling of 20068505 in words is "twenty million, sixty-eight thousand, five hundred five".