105660663 has 8 divisors (see below), whose sum is σ = 141043968. Its totient is φ = 70358904.

The previous prime is 105660647. The next prime is 105660673. The reversal of 105660663 is 366066501.

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

It is not a de Polignac number, because 105660663 - 2⁴ = 105660647 is a prime.

It is a super-2 number, since 2×105660663² = 22328351411199138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105660613) 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 7 ways as a sum of consecutive naturals, for example, 17295 + ... + 22592.

It is an arithmetic number, because the mean of its divisors is an integer number (17630496).

Almost surely, 2^105660663 is an apocalyptic number.

105660663 is a deficient number, since it is larger than the sum of its proper divisors (35383305).

105660663 is an equidigital number, since it uses as much as digits as its factorization.

105660663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40773.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 105660663 is about 10279.1372692459. The cubic root of 105660663 is about 472.7567921913.

The spelling of 105660663 in words is "one hundred five million, six hundred sixty thousand, six hundred sixty-three".