78886 has 4 divisors (see below), whose sum is σ = 118332. Its totient is φ = 39442.

The previous prime is 78877. The next prime is 78887. The reversal of 78886 is 68887.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19720 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (29583).

2⁷⁸⁸⁸⁶ is an apocalyptic number.

78886 is a deficient number, since it is larger than the sum of its proper divisors (39446).

78886 is a wasteful number, since it uses less digits than its factorization.

78886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39445.

The product of its digits is 21504, while the sum is 37.

The square root of 78886 is about 280.8665163383. The cubic root of 78886 is about 42.8877548488.

Subtracting from 78886 its reverse (68887), we obtain a palindrome (9999).

The spelling of 78886 in words is "seventy-eight thousand, eight hundred eighty-six".