78876305 has 4 divisors (see below), whose sum is σ = 94651572. Its totient is φ = 63101040.

The previous prime is 78876289. The next prime is 78876323. The reversal of 78876305 is 50367887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50367887 = 59 ⋅853693.

It can be written as a sum of positive squares in 2 ways, for example, as 23775376 + 55100929 = 4876^2 + 7423^2 .

It is not a de Polignac number, because 78876305 - 2⁴ = 78876289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7887626 + ... + 7887635.

It is an arithmetic number, because the mean of its divisors is an integer number (23662893).

Almost surely, 2^78876305 is an apocalyptic number.

It is an amenable number.

78876305 is a deficient number, since it is larger than the sum of its proper divisors (15775267).

78876305 is a wasteful number, since it uses less digits than its factorization.

78876305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15775266.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 78876305 is about 8881.2333039956. The cubic root of 78876305 is about 428.8599782471.

The spelling of 78876305 in words is "seventy-eight million, eight hundred seventy-six thousand, three hundred five".