106686155 has 4 divisors (see below), whose sum is σ = 128023392. Its totient is φ = 85348920.

The previous prime is 106686149. The next prime is 106686187. The reversal of 106686155 is 551686601.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 106686155 - 2²⁰ = 105637579 is a prime.

It is a super-2 number, since 2×106686155² = 22763871337368050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668611 + ... + 10668620.

It is an arithmetic number, because the mean of its divisors is an integer number (32005848).

Almost surely, 2^106686155 is an apocalyptic number.

106686155 is a deficient number, since it is larger than the sum of its proper divisors (21337237).

106686155 is an equidigital number, since it uses as much as digits as its factorization.

106686155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337236.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 106686155 is about 10328.8990216770. The cubic root of 106686155 is about 474.2813213075.

The spelling of 106686155 in words is "one hundred six million, six hundred eighty-six thousand, one hundred fifty-five".