105666986 has 8 divisors (see below), whose sum is σ = 158574144. Its totient is φ = 52808940.

The previous prime is 105666947. The next prime is 105666997. The reversal of 105666986 is 689666501.

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

It is a super-2 number, since 2×105666986² = 22331023860648392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105666986.

It is an unprimeable number.

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, 6320 + ... + 15851.

It is an arithmetic number, because the mean of its divisors is an integer number (19821768).

Almost surely, 2^105666986 is an apocalyptic number.

105666986 is a deficient number, since it is larger than the sum of its proper divisors (52907158).

105666986 is a wasteful number, since it uses less digits than its factorization.

105666986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24556.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 105666986 is about 10279.4448293670. Note that the first 3 decimals coincide. The cubic root of 105666986 is about 472.7662223219.

The spelling of 105666986 in words is "one hundred five million, six hundred sixty-six thousand, nine hundred eighty-six".