109666985 has 8 divisors (see below), whose sum is σ = 134661120. Its totient is φ = 85693104.

The previous prime is 109666979. The next prime is 109667003. The reversal of 109666985 is 589666901.

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 109666985 - 2¹⁴ = 109650601 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254825 + ... + 255254.

It is an arithmetic number, because the mean of its divisors is an integer number (16832640).

Almost surely, 2^109666985 is an apocalyptic number.

It is an amenable number.

109666985 is a deficient number, since it is larger than the sum of its proper divisors (24994135).

109666985 is an equidigital number, since it uses as much as digits as its factorization.

109666985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510127.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 109666985 is about 10472.2005805848. The cubic root of 109666985 is about 478.6579773456.

The spelling of 109666985 in words is "one hundred nine million, six hundred sixty-six thousand, nine hundred eighty-five".