105211666 has 32 divisors (see below), whose sum is σ = 183290112. Its totient is φ = 44366400.

The previous prime is 105211649. The next prime is 105211679. The reversal of 105211666 is 666112501.

It is a super-2 number, since 2×105211666² = 22138989324991112, 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, 331740 + ... + 332056.

It is an arithmetic number, because the mean of its divisors is an integer number (5727816).

Almost surely, 2^105211666 is an apocalyptic number.

105211666 is a deficient number, since it is larger than the sum of its proper divisors (78078446).

105211666 is a wasteful number, since it uses less digits than its factorization.

105211666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 105211666 is about 10257.2738093511. The cubic root of 105211666 is about 472.0861933225.

The spelling of 105211666 in words is "one hundred five million, two hundred eleven thousand, six hundred sixty-six".