78931696 has 20 divisors (see below), whose sum is σ = 154336600. Its totient is φ = 39102912.

The previous prime is 78931667. The next prime is 78931709. The reversal of 78931696 is 69613987.

It is a congruent 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, 20886 + ... + 24373.

It is an arithmetic number, because the mean of its divisors is an integer number (7716830).

Almost surely, 2^78931696 is an apocalyptic number.

It is an amenable number.

78931696 is a deficient number, since it is larger than the sum of its proper divisors (75404904).

78931696 is a wasteful number, since it uses less digits than its factorization.

78931696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45376 (or 45370 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 78931696 is about 8884.3511862150. The cubic root of 78931696 is about 428.9603439381.

The spelling of 78931696 in words is "seventy-eight million, nine hundred thirty-one thousand, six hundred ninety-six".