107845 has 4 divisors (see below), whose sum is σ = 129420. Its totient is φ = 86272.

The previous prime is 107843. The next prime is 107857. The reversal of 107845 is 548701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548701 = 19 ⋅28879.

It can be written as a sum of positive squares in 2 ways, for example, as 16641 + 91204 = 129^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 107845 - 2¹ = 107843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10780 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (32355).

2¹⁰⁷⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

107845 is a deficient number, since it is larger than the sum of its proper divisors (21575).

107845 is an equidigital number, since it uses as much as digits as its factorization.

107845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21574.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 107845 is about 328.3976248392. The cubic root of 107845 is about 47.5992385068.

The spelling of 107845 in words is "one hundred seven thousand, eight hundred forty-five".