105666023 has 4 divisors (see below), whose sum is σ = 106010520. Its totient is φ = 105321528.

The previous prime is 105666019. The next prime is 105666083. The reversal of 105666023 is 320666501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320666501 = 103 ⋅3113267.

It is a cyclic number.

It is not a de Polignac number, because 105666023 - 2² = 105666019 is a prime.

It is a super-2 number, since 2×105666023² = 22330616833273058, 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 (105666083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171788 + ... + 172401.

It is an arithmetic number, because the mean of its divisors is an integer number (26502630).

Almost surely, 2^105666023 is an apocalyptic number.

105666023 is a deficient number, since it is larger than the sum of its proper divisors (344497).

105666023 is an equidigital number, since it uses as much as digits as its factorization.

105666023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344496.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 105666023 is about 10279.3979882092. The cubic root of 105666023 is about 472.7647861267.

The spelling of 105666023 in words is "one hundred five million, six hundred sixty-six thousand, twenty-three".