78804693 has 48 divisors (see below), whose sum is σ = 132223104. Its totient is φ = 44753280.

The previous prime is 78804689. The next prime is 78804703. The reversal of 78804693 is 39640887.

It is a happy number.

It is not a de Polignac number, because 78804693 - 2² = 78804689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78804613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120355 + ... + 121007.

It is an arithmetic number, because the mean of its divisors is an integer number (2754648).

Almost surely, 2^78804693 is an apocalyptic number.

It is an amenable number.

78804693 is a deficient number, since it is larger than the sum of its proper divisors (53418411).

78804693 is a wasteful number, since it uses less digits than its factorization.

78804693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 78804693 is about 8877.2007412247. The cubic root of 78804693 is about 428.7301512570.

It can be divided in two parts, 78804 and 693, that added together give a palindrome (79497).

The spelling of 78804693 in words is "seventy-eight million, eight hundred four thousand, six hundred ninety-three".