109745 has 8 divisors (see below), whose sum is σ = 134784. Its totient is φ = 85744.

The previous prime is 109741. The next prime is 109751. The reversal of 109745 is 547901.

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 109745 - 2² = 109741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2 + ... + 468.

It is an arithmetic number, because the mean of its divisors is an integer number (16848).

2¹⁰⁹⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

109745 is a deficient number, since it is larger than the sum of its proper divisors (25039).

109745 is an equidigital number, since it uses as much as digits as its factorization.

109745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 109745 is about 331.2778290197. The cubic root of 109745 is about 47.8771453158.

The spelling of 109745 in words is "one hundred nine thousand, seven hundred forty-five".