10666001 has 2 divisors, whose sum is σ = 10666002. Its totient is φ = 10666000.

The previous prime is 10665983. The next prime is 10666003. The reversal of 10666001 is 10066601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10660225 + 5776 = 3265^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 10666001 - 2¹⁰ = 10664977 is a prime.

It is a super-2 number, since 2×10666001² = 227527154664002, which contains 22 as substring.

Together with 10666003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10666003) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333000 + 5333001.

It is an arithmetic number, because the mean of its divisors is an integer number (5333001).

Almost surely, 2^10666001 is an apocalyptic number.

It is an amenable number.

10666001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666001 is an equidigital number, since it uses as much as digits as its factorization.

10666001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 10666001 is about 3265.8844131414. The cubic root of 10666001 is about 220.1239040333.

It can be divided in two parts, 1066600 and 1, that added together give a palindrome (1066601).

The spelling of 10666001 in words is "ten million, six hundred sixty-six thousand, one".