20067 has 4 divisors (see below), whose sum is σ = 26760. Its totient is φ = 13376.

The previous prime is 20063. The next prime is 20071. The reversal of 20067 is 76002.

20067 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 (20063) and next prime (20071).

It is a cyclic number.

It is not a de Polignac number, because 20067 - 2² = 20063 is a prime.

It is a D-number.

20067 is a lucky number.

It is a plaindrome in base 7.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (20063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3342 + ... + 3347.

It is an arithmetic number, because the mean of its divisors is an integer number (6690).

2²⁰⁰⁶⁷ is an apocalyptic number.

20067 is a deficient number, since it is larger than the sum of its proper divisors (6693).

20067 is an equidigital number, since it uses as much as digits as its factorization.

20067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20067 is about 141.6580389530. The cubic root of 20067 is about 27.1744533782.

Adding to 20067 its reverse (76002), we get a palindrome (96069).

The spelling of 20067 in words is "twenty thousand, sixty-seven".