78679123 has 8 divisors (see below), whose sum is σ = 80868816. Its totient is φ = 76502400.

The previous prime is 78679109. The next prime is 78679151. The reversal of 78679123 is 32197687.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78679123 - 2⁵ = 78679091 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 78679123.

It is not an unprimeable number, because it can be changed into a prime (78679193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9768 + ... + 15898.

It is an arithmetic number, because the mean of its divisors is an integer number (10108602).

Almost surely, 2^78679123 is an apocalyptic number.

78679123 is a deficient number, since it is larger than the sum of its proper divisors (2189693).

78679123 is a wasteful number, since it uses less digits than its factorization.

78679123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485.

The product of its digits is 127008, while the sum is 43.

The square root of 78679123 is about 8870.1253091487. The cubic root of 78679123 is about 428.5023126055.

The spelling of 78679123 in words is "seventy-eight million, six hundred seventy-nine thousand, one hundred twenty-three".