26669 has 2 divisors, whose sum is σ = 26670. Its totient is φ = 26668.

The previous prime is 26647. The next prime is 26681. The reversal of 26669 is 96662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26569 + 100 = 163^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 26669 - 2¹² = 22573 is a prime.

It is a super-2 number, since 2×26669² = 1422471122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13334 + 13335.

It is an arithmetic number, because the mean of its divisors is an integer number (13335).

2²⁶⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

26669 is a deficient number, since it is larger than the sum of its proper divisors (1).

26669 is an equidigital number, since it uses as much as digits as its factorization.

26669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 26669 is about 163.3064603744. The cubic root of 26669 is about 29.8769030026.

The spelling of 26669 in words is "twenty-six thousand, six hundred sixty-nine".