112639 has 4 divisors (see below), whose sum is σ = 114256. Its totient is φ = 111024.

The previous prime is 112621. The next prime is 112643. The reversal of 112639 is 936211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936211 = 37 ⋅25303.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112639 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112139) 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, 699 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (28564).

2¹¹²⁶³⁹ is an apocalyptic number.

112639 is a deficient number, since it is larger than the sum of its proper divisors (1617).

112639 is an equidigital number, since it uses as much as digits as its factorization.

112639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616.

The product of its digits is 324, while the sum is 22.

The square root of 112639 is about 335.6173416258. The cubic root of 112639 is about 48.2943429770.

The spelling of 112639 in words is "one hundred twelve thousand, six hundred thirty-nine".