105216666 has 32 divisors (see below), whose sum is σ = 220489728. Its totient is φ = 33430320.

The previous prime is 105216659. The next prime is 105216677. The reversal of 105216666 is 666612501.

It is a super-2 number, since 2×105216666² = 22141093608311112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8241 + ... + 16683.

It is an arithmetic number, because the mean of its divisors is an integer number (6890304).

Almost surely, 2^105216666 is an apocalyptic number.

105216666 is an abundant number, since it is smaller than the sum of its proper divisors (115273062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105216666 is a wasteful number, since it uses less digits than its factorization.

105216666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8546.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 105216666 is about 10257.5175359343. The cubic root of 105216666 is about 472.0936715603.

The spelling of 105216666 in words is "one hundred five million, two hundred sixteen thousand, six hundred sixty-six".