78781303 has 2 divisors, whose sum is σ = 78781304. Its totient is φ = 78781302.

The previous prime is 78781291. The next prime is 78781327. The reversal of 78781303 is 30318787.

It is a weak prime.

It is an emirp because it is prime and its reverse (30318787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78781303 - 2⁵ = 78781271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78781333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39390651 + 39390652.

It is an arithmetic number, because the mean of its divisors is an integer number (39390652).

Almost surely, 2^78781303 is an apocalyptic number.

78781303 is a deficient number, since it is larger than the sum of its proper divisors (1).

78781303 is an equidigital number, since it uses as much as digits as its factorization.

78781303 is an odious number, because the sum of its binary digits is odd.

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

The square root of 78781303 is about 8875.8832236572. The cubic root of 78781303 is about 428.6877299655.

The spelling of 78781303 in words is "seventy-eight million, seven hundred eighty-one thousand, three hundred three".