78668336 has 10 divisors (see below), whose sum is σ = 152419932. Its totient is φ = 39334160.

The previous prime is 78668321. The next prime is 78668347. The reversal of 78668336 is 63386687.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2458370 + ... + 2458401.

Almost surely, 2^78668336 is an apocalyptic number.

It is an amenable number.

78668336 is a deficient number, since it is larger than the sum of its proper divisors (73751596).

78668336 is a wasteful number, since it uses less digits than its factorization.

78668336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916779 (or 4916773 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 78668336 is about 8869.5172360169. The cubic root of 78668336 is about 428.4827289874.

The spelling of 78668336 in words is "seventy-eight million, six hundred sixty-eight thousand, three hundred thirty-six".