109197685 has 16 divisors (see below), whose sum is σ = 134265600. Its totient is φ = 85218496.

The previous prime is 109197679. The next prime is 109197701. The reversal of 109197685 is 586791901.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 109197685 - 2²³ = 100809077 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 97911 + ... + 99019.

It is an arithmetic number, because the mean of its divisors is an integer number (8391600).

Almost surely, 2^109197685 is an apocalyptic number.

It is an amenable number.

109197685 is a deficient number, since it is larger than the sum of its proper divisors (25067915).

109197685 is a wasteful number, since it uses less digits than its factorization.

109197685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 109197685 is about 10449.7696146853. The cubic root of 109197685 is about 477.9742243765.

The spelling of 109197685 in words is "one hundred nine million, one hundred ninety-seven thousand, six hundred eighty-five".