106861666 has 8 divisors (see below), whose sum is σ = 160367580. Its totient is φ = 53405808.

The previous prime is 106861663. The next prime is 106861669. The reversal of 106861666 is 666168601.

It is an interprime number because it is at equal distance from previous prime (106861663) and next prime (106861669).

It can be written as a sum of positive squares in 2 ways, for example, as 104960025 + 1901641 = 10245^2 + 1379^2 .

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

It is a super-2 number, since 2×106861666² = 22838831320591112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106861663) by changing a digit.

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, 6621 + ... + 16048.

Almost surely, 2^106861666 is an apocalyptic number.

106861666 is a deficient number, since it is larger than the sum of its proper divisors (53505914).

106861666 is a wasteful number, since it uses less digits than its factorization.

106861666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25028.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 106861666 is about 10337.3916439303. The cubic root of 106861666 is about 474.5412612636.

The spelling of 106861666 in words is "one hundred six million, eight hundred sixty-one thousand, six hundred sixty-six".