78713507 has 2 divisors, whose sum is σ = 78713508. Its totient is φ = 78713506.

The previous prime is 78713501. The next prime is 78713549. The reversal of 78713507 is 70531787.

It is a weak prime.

It is an emirp because it is prime and its reverse (70531787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78713507 - 2²⁰ = 77664931 is a prime.

It is a Chen prime.

It is equal to p_4598705 and since 78713507 and 4598705 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (78713501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39356753 + 39356754.

It is an arithmetic number, because the mean of its divisors is an integer number (39356754).

Almost surely, 2^78713507 is an apocalyptic number.

78713507 is a deficient number, since it is larger than the sum of its proper divisors (1).

78713507 is an equidigital number, since it uses as much as digits as its factorization.

78713507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 78713507 is about 8872.0632887734. The cubic root of 78713507 is about 428.5647242390.

The spelling of 78713507 in words is "seventy-eight million, seven hundred thirteen thousand, five hundred seven".