78718712 has 8 divisors (see below), whose sum is σ = 147597600. Its totient is φ = 39359352.

The previous prime is 78718709. The next prime is 78718733. The reversal of 78718712 is 21781787.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 78718712.

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 as a sum of consecutive naturals, namely, 4919912 + ... + 4919927.

It is an arithmetic number, because the mean of its divisors is an integer number (18449700).

Almost surely, 2^78718712 is an apocalyptic number.

It is an amenable number.

78718712 is a deficient number, since it is larger than the sum of its proper divisors (68878888).

78718712 is a wasteful number, since it uses less digits than its factorization.

78718712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9839845 (or 9839841 counting only the distinct ones).

The product of its digits is 43904, while the sum is 41.

The square root of 78718712 is about 8872.3566204250. The cubic root of 78718712 is about 428.5741704375.

The spelling of 78718712 in words is "seventy-eight million, seven hundred eighteen thousand, seven hundred twelve".