105511666 has 8 divisors (see below), whose sum is σ = 170441964. Its totient is φ = 48697680.

The previous prime is 105511661. The next prime is 105511697. The reversal of 105511666 is 666115501.

It can be written as a sum of positive squares in 2 ways, for example, as 105493441 + 18225 = 10271^2 + 135^2 .

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

It is a super-2 number, since 2×105511666² = 22265423324191112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105511661) 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, 2029045 + ... + 2029096.

Almost surely, 2^105511666 is an apocalyptic number.

105511666 is a deficient number, since it is larger than the sum of its proper divisors (64930298).

105511666 is a wasteful number, since it uses less digits than its factorization.

105511666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058156.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 105511666 is about 10271.8871683834. The cubic root of 105511666 is about 472.5344688981.

It can be divided in two parts, 1055 and 11666, that added together give a palindrome (12721).

The spelling of 105511666 in words is "one hundred five million, five hundred eleven thousand, six hundred sixty-six".