105666101 has 4 divisors (see below), whose sum is σ = 111881772. Its totient is φ = 99450432.

The previous prime is 105666083. The next prime is 105666103. The reversal of 105666101 is 101666501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88642225 + 17023876 = 9415^2 + 4126^2 .

It is a cyclic number.

It is not a de Polignac number, because 105666101 - 2¹⁸ = 105403957 is a prime.

It is a super-2 number, since 2×105666101² = 22330649801084402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105666103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3107810 + ... + 3107843.

It is an arithmetic number, because the mean of its divisors is an integer number (27970443).

Almost surely, 2^105666101 is an apocalyptic number.

It is an amenable number.

105666101 is a deficient number, since it is larger than the sum of its proper divisors (6215671).

105666101 is an equidigital number, since it uses as much as digits as its factorization.

105666101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6215670.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 105666101 is about 10279.4017822050. The cubic root of 105666101 is about 472.7649024544.

The spelling of 105666101 in words is "one hundred five million, six hundred sixty-six thousand, one hundred one".