78713873 has 8 divisors (see below), whose sum is σ = 90048192. Its totient is φ = 67401936.

The previous prime is 78713857. The next prime is 78713881. The reversal of 78713873 is 37831787.

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

It is not a de Polignac number, because 78713873 - 2⁴ = 78713857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78713473) 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, 2786 + ... + 12852.

It is an arithmetic number, because the mean of its divisors is an integer number (11256024).

Almost surely, 2^78713873 is an apocalyptic number.

It is an amenable number.

78713873 is a deficient number, since it is larger than the sum of its proper divisors (11334319).

78713873 is a wasteful number, since it uses less digits than its factorization.

78713873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11191.

The product of its digits is 197568, while the sum is 44.

The square root of 78713873 is about 8872.0839152930. The cubic root of 78713873 is about 428.5653884810.

The spelling of 78713873 in words is "seventy-eight million, seven hundred thirteen thousand, eight hundred seventy-three".