78770323 has 2 divisors, whose sum is σ = 78770324. Its totient is φ = 78770322.

The previous prime is 78770317. The next prime is 78770357. The reversal of 78770323 is 32307787.

It is a weak prime.

It is an emirp because it is prime and its reverse (32307787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78770323 - 2⁹ = 78769811 is a prime.

It is not a weakly prime, because it can be changed into another prime (78773323) by changing a digit.

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, 39385161 + 39385162.

It is an arithmetic number, because the mean of its divisors is an integer number (39385162).

Almost surely, 2^78770323 is an apocalyptic number.

78770323 is a deficient number, since it is larger than the sum of its proper divisors (1).

78770323 is an equidigital number, since it uses as much as digits as its factorization.

78770323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 78770323 is about 8875.2646721098. The cubic root of 78770323 is about 428.6678131842.

The spelling of 78770323 in words is "seventy-eight million, seven hundred seventy thousand, three hundred twenty-three".