112865 has 4 divisors (see below), whose sum is σ = 135444. Its totient is φ = 90288.

The previous prime is 112859. The next prime is 112877. The reversal of 112865 is 568211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568211 = 7 ⋅81173.

It can be written as a sum of positive squares in 2 ways, for example, as 20449 + 92416 = 143^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 112865 - 2¹² = 108769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112865.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11282 + ... + 11291.

It is an arithmetic number, because the mean of its divisors is an integer number (33861).

2¹¹²⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

112865 is a deficient number, since it is larger than the sum of its proper divisors (22579).

112865 is an equidigital number, since it uses as much as digits as its factorization.

112865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22578.

The product of its digits is 480, while the sum is 23.

The square root of 112865 is about 335.9538658804. The cubic root of 112865 is about 48.3266208144.

The spelling of 112865 in words is "one hundred twelve thousand, eight hundred sixty-five".