100666055 has 24 divisors (see below), whose sum is σ = 144346272. Its totient is φ = 66014784.

The previous prime is 100666003. The next prime is 100666063. The reversal of 100666055 is 550666001.

It is not a de Polignac number, because 100666055 - 2¹⁸ = 100403911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15797 + ... + 21233.

It is an arithmetic number, because the mean of its divisors is an integer number (6014428).

Almost surely, 2^100666055 is an apocalyptic number.

100666055 is a deficient number, since it is larger than the sum of its proper divisors (43680217).

100666055 is an equidigital number, since it uses as much as digits as its factorization.

100666055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495 (or 5472 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 100666055 is about 10033.2474802528. The cubic root of 100666055 is about 465.1871216683.

The spelling of 100666055 in words is "one hundred million, six hundred sixty-six thousand, fifty-five".