105066661 has 4 divisors (see below), whose sum is σ = 120076192. Its totient is φ = 90057132.

The previous prime is 105066607. The next prime is 105066671. The reversal of 105066661 is 166660501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105066661 - 2¹¹ = 105064613 is a prime.

It is a super-2 number, since 2×105066661² = 22078006507377842, 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 (105066671) 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 3 ways as a sum of consecutive naturals, for example, 7504755 + ... + 7504768.

It is an arithmetic number, because the mean of its divisors is an integer number (30019048).

Almost surely, 2^105066661 is an apocalyptic number.

It is an amenable number.

105066661 is a deficient number, since it is larger than the sum of its proper divisors (15009531).

105066661 is an equidigital number, since it uses as much as digits as its factorization.

105066661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15009530.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 105066661 is about 10250.2029736001. The cubic root of 105066661 is about 471.8692137998.

The spelling of 105066661 in words is "one hundred five million, sixty-six thousand, six hundred sixty-one".