78486 has 16 divisors (see below), whose sum is σ = 159744. Its totient is φ = 25704.

The previous prime is 78479. The next prime is 78487. The reversal of 78486 is 68487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78487) 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, 555 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (9984).

2⁷⁸⁴⁸⁶ is an apocalyptic number.

78486 is an abundant number, since it is smaller than the sum of its proper divisors (81258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79872).

78486 is a wasteful number, since it uses less digits than its factorization.

78486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235.

The product of its digits is 10752, while the sum is 33.

The square root of 78486 is about 280.1535293370. The cubic root of 78486 is about 42.8151429807.

Subtracting from 78486 its reverse (68487), we obtain a palindrome (9999).

The spelling of 78486 in words is "seventy-eight thousand, four hundred eighty-six".