78775343 has 2 divisors, whose sum is σ = 78775344. Its totient is φ = 78775342.

The previous prime is 78775321. The next prime is 78775369. The reversal of 78775343 is 34357787.

It is a weak prime.

It is an emirp because it is prime and its reverse (34357787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78775343 - 2²⁴ = 61998127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78775294 and 78775303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78775303) 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, 39387671 + 39387672.

It is an arithmetic number, because the mean of its divisors is an integer number (39387672).

Almost surely, 2^78775343 is an apocalyptic number.

78775343 is a deficient number, since it is larger than the sum of its proper divisors (1).

78775343 is an equidigital number, since it uses as much as digits as its factorization.

78775343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 44.

The square root of 78775343 is about 8875.5474760715. The cubic root of 78775343 is about 428.6769192647.

The spelling of 78775343 in words is "seventy-eight million, seven hundred seventy-five thousand, three hundred forty-three".