2069 has 2 divisors, whose sum is σ = 2070.
Its totient is φ = 2068.
The previous prime is 2063. The next prime is 2081. The reversal of 2069 is 9602.
2069 is nontrivially palindromic in base 3.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1444 + 625 = 38^2 + 25^2
It is a cyclic number.
It is not a de Polignac number, because 2069 - 24 = 2053 is a prime.
It is a super-2 number, since 2×20692 = 8561522, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is a plaindrome in base 12.
It is a nialpdrome in base 13.
It is a zygodrome in base 3.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2063) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034 + 1035.
It is an arithmetic number, because the mean of its divisors is an integer number (1035).
22069 is an apocalyptic number.
It is an amenable number.
2069 is a deficient number, since it is larger than the sum of its proper divisors (1).
2069 is an equidigital number, since it uses as much as digits as its factorization.
2069 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 108, while the sum is 17.
The square root of 2069 is about 45.4862616622.
The cubic root of 2069 is about 12.7424663940.
The spelling of 2069 in words is "two thousand, sixty-nine".