109655197 has 4 divisors (see below), whose sum is σ = 112329756. Its totient is φ = 106980640.

The previous prime is 109655173. The next prime is 109655207. The reversal of 109655197 is 791556901.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33860761 + 75794436 = 5819^2 + 8706^2 .

It is a cyclic number.

It is not a de Polignac number, because 109655197 - 2⁷ = 109655069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109655297) 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 3 ways as a sum of consecutive naturals, for example, 1337218 + ... + 1337299.

It is an arithmetic number, because the mean of its divisors is an integer number (28082439).

Almost surely, 2^109655197 is an apocalyptic number.

It is an amenable number.

109655197 is a deficient number, since it is larger than the sum of its proper divisors (2674559).

109655197 is an equidigital number, since it uses as much as digits as its factorization.

109655197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674558.

The product of its (nonzero) digits is 85050, while the sum is 43.

The square root of 109655197 is about 10471.6377420153. The cubic root of 109655197 is about 478.6408265674.

The spelling of 109655197 in words is "one hundred nine million, six hundred fifty-five thousand, one hundred ninety-seven".