2108669 has 2 divisors, whose sum is σ = 2108670. Its totient is φ = 2108668.

The previous prime is 2108657. The next prime is 2108699. The reversal of 2108669 is 9668012.

2108669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1923769 + 184900 = 1387^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108669 - 2⁴ = 2108653 is a prime.

It is a super-2 number, since 2×2108669² = 8892969903122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2108699) by changing a digit.

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 as a sum of consecutive naturals, namely, 1054334 + 1054335.

It is an arithmetic number, because the mean of its divisors is an integer number (1054335).

2^2108669 is an apocalyptic number.

It is an amenable number.

2108669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108669 is an equidigital number, since it uses as much as digits as its factorization.

2108669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2108669 is about 1452.1256832657. The cubic root of 2108669 is about 128.2338863388.

The spelling of 2108669 in words is "two million, one hundred eight thousand, six hundred sixty-nine".