108186661 has 8 divisors (see below), whose sum is σ = 118128384. Its totient is φ = 98262720.

The previous prime is 108186653. The next prime is 108186671. The reversal of 108186661 is 166681801.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 108186661 - 2³ = 108186653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108186661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108186671) 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 7 ways as a sum of consecutive naturals, for example, 10476 + ... + 18058.

It is an arithmetic number, because the mean of its divisors is an integer number (14766048).

Almost surely, 2^108186661 is an apocalyptic number.

108186661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108186661 is a deficient number, since it is larger than the sum of its proper divisors (9941723).

108186661 is a wasteful number, since it uses less digits than its factorization.

108186661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 108186661 is about 10401.2816998676. The cubic root of 108186661 is about 476.4945149659.

The spelling of 108186661 in words is "one hundred eight million, one hundred eighty-six thousand, six hundred sixty-one".