105611666 has 8 divisors (see below), whose sum is σ = 158467260. Its totient is φ = 52789248.

The previous prime is 105611663. The next prime is 105611729. The reversal of 105611666 is 666116501.

It can be written as a sum of positive squares in 2 ways, for example, as 102111025 + 3500641 = 10105^2 + 1871^2 .

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

It is a super-2 number, since 2×105611666² = 22307647990591112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105611663) 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, 2450 + ... + 14738.

Almost surely, 2^105611666 is an apocalyptic number.

105611666 is a deficient number, since it is larger than the sum of its proper divisors (52855594).

105611666 is a wasteful number, since it uses less digits than its factorization.

105611666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16588.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 105611666 is about 10276.7536702988. The cubic root of 105611666 is about 472.6837052439.

The spelling of 105611666 in words is "one hundred five million, six hundred eleven thousand, six hundred sixty-six".