78536105 has 4 divisors (see below), whose sum is σ = 94243332. Its totient is φ = 62828880.

The previous prime is 78536083. The next prime is 78536119. The reversal of 78536105 is 50163587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50163587 = 1249 ⋅40163.

It can be written as a sum of positive squares in 2 ways, for example, as 32581264 + 45954841 = 5708^2 + 6779^2 .

It is not a de Polignac number, because 78536105 - 2²² = 74341801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7853606 + ... + 7853615.

It is an arithmetic number, because the mean of its divisors is an integer number (23560833).

Almost surely, 2^78536105 is an apocalyptic number.

It is an amenable number.

78536105 is a deficient number, since it is larger than the sum of its proper divisors (15707227).

78536105 is a wasteful number, since it uses less digits than its factorization.

78536105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15707226.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 78536105 is about 8862.0598621314. The cubic root of 78536105 is about 428.2425202091.

The spelling of 78536105 in words is "seventy-eight million, five hundred thirty-six thousand, one hundred five".