78703073 has 4 divisors (see below), whose sum is σ = 82845360. Its totient is φ = 74560788.

The previous prime is 78703061. The next prime is 78703087. The reversal of 78703073 is 37030787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78703073 - 2⁸ = 78702817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78703673) by changing a digit.

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, 2071115 + ... + 2071152.

It is an arithmetic number, because the mean of its divisors is an integer number (20711340).

Almost surely, 2^78703073 is an apocalyptic number.

It is an amenable number.

78703073 is a deficient number, since it is larger than the sum of its proper divisors (4142287).

78703073 is a wasteful number, since it uses less digits than its factorization.

78703073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142286.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 78703073 is about 8871.4752437236. The cubic root of 78703073 is about 428.5457870320.

The spelling of 78703073 in words is "seventy-eight million, seven hundred three thousand, seventy-three".