100666115 has 16 divisors (see below), whose sum is σ = 133146720. Its totient is φ = 72453120.

The previous prime is 100666109. The next prime is 100666127. The reversal of 100666115 is 511666001.

It is a de Polignac number, because none of the positive numbers 2^k-100666115 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4100 + ... + 14769.

It is an arithmetic number, because the mean of its divisors is an integer number (8321670).

Almost surely, 2^100666115 is an apocalyptic number.

100666115 is a deficient number, since it is larger than the sum of its proper divisors (32480605).

100666115 is a wasteful number, since it uses less digits than its factorization.

100666115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18982.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 100666115 is about 10033.2504703112. The cubic root of 100666115 is about 465.1872140901.

The spelling of 100666115 in words is "one hundred million, six hundred sixty-six thousand, one hundred fifteen".