78696 has 24 divisors (see below), whose sum is σ = 213330. Its totient is φ = 26208.

The previous prime is 78691. The next prime is 78697. The reversal of 78696 is 69687.

It can be written as a sum of positive squares in only one way, i.e., 44100 + 34596 = 210^2 + 186^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 78696.

It is not an unprimeable number, because it can be changed into a prime (78691) by changing a digit.

78696 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 475 + ... + 618.

2⁷⁸⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

78696 is an abundant number, since it is smaller than the sum of its proper divisors (134634).

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

78696 is a wasteful number, since it uses less digits than its factorization.

78696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105 (or 1098 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 78696 is about 280.5280734615. The cubic root of 78696 is about 42.8532948926.

Subtracting from 78696 its reverse (69687), we obtain a palindrome (9009).

It can be divided in two parts, 7869 and 6, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 78696 in words is "seventy-eight thousand, six hundred ninety-six".