10666109 has 8 divisors (see below), whose sum is σ = 11002488. Its totient is φ = 10333440.

The previous prime is 10666093. The next prime is 10666129. The reversal of 10666109 is 90166601.

It can be written as a sum of positive squares in 4 ways, for example, as 84100 + 10582009 = 290^2 + 3253^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10666109 - 2⁴ = 10666093 is a prime.

It is a super-2 number, since 2×10666109² = 227531762399762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10666129) 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 in 7 ways as a sum of consecutive naturals, for example, 5609 + ... + 7265.

It is an arithmetic number, because the mean of its divisors is an integer number (1375311).

Almost surely, 2^10666109 is an apocalyptic number.

It is an amenable number.

10666109 is a deficient number, since it is larger than the sum of its proper divisors (336379).

10666109 is a wasteful number, since it uses less digits than its factorization.

10666109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 10666109 is about 3265.9009476713. The cubic root of 10666109 is about 220.1246469954.

The spelling of 10666109 in words is "ten million, six hundred sixty-six thousand, one hundred nine".