78480673 has 2 divisors, whose sum is σ = 78480674. Its totient is φ = 78480672.

The previous prime is 78480637. The next prime is 78480707. The reversal of 78480673 is 37608487.

Together with previous prime (78480637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73153809 + 5326864 = 8553^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 78480673 - 2⁹ = 78480161 is a prime.

It is not a weakly prime, because it can be changed into another prime (78480473) 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, 39240336 + 39240337.

It is an arithmetic number, because the mean of its divisors is an integer number (39240337).

Almost surely, 2^78480673 is an apocalyptic number.

It is an amenable number.

78480673 is a deficient number, since it is larger than the sum of its proper divisors (1).

78480673 is an equidigital number, since it uses as much as digits as its factorization.

78480673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 78480673 is about 8858.9318204849. The cubic root of 78480673 is about 428.1417430929.

The spelling of 78480673 in words is "seventy-eight million, four hundred eighty thousand, six hundred seventy-three".