78416713 has 2 divisors, whose sum is σ = 78416714. Its totient is φ = 78416712.

The previous prime is 78416707. The next prime is 78416717. The reversal of 78416713 is 31761487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46063369 + 32353344 = 6787^2 + 5688^2 .

It is a cyclic number.

It is not a de Polignac number, because 78416713 - 2⁹ = 78416201 is a prime.

It is a super-2 number, since 2×78416713² = 12298361755448738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78416717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39208356 + 39208357.

It is an arithmetic number, because the mean of its divisors is an integer number (39208357).

Almost surely, 2^78416713 is an apocalyptic number.

It is an amenable number.

78416713 is a deficient number, since it is larger than the sum of its proper divisors (1).

78416713 is an equidigital number, since it uses as much as digits as its factorization.

78416713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 78416713 is about 8855.3211686533. The cubic root of 78416713 is about 428.0254028216.

The spelling of 78416713 in words is "seventy-eight million, four hundred sixteen thousand, seven hundred thirteen".