78068713 has 2 divisors, whose sum is σ = 78068714. Its totient is φ = 78068712.

The previous prime is 78068681. The next prime is 78068717. The reversal of 78068713 is 31786087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57881664 + 20187049 = 7608^2 + 4493^2 .

It is an emirp because it is prime and its reverse (31786087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78068713 - 2⁵ = 78068681 is a prime.

It is not a weakly prime, because it can be changed into another prime (78068717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39034356 + 39034357.

It is an arithmetic number, because the mean of its divisors is an integer number (39034357).

Almost surely, 2^78068713 is an apocalyptic number.

It is an amenable number.

78068713 is a deficient number, since it is larger than the sum of its proper divisors (1).

78068713 is an equidigital number, since it uses as much as digits as its factorization.

78068713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 78068713 is about 8835.6501175635. The cubic root of 78068713 is about 427.3912959594.

The spelling of 78068713 in words is "seventy-eight million, sixty-eight thousand, seven hundred thirteen".