78678283 has 2 divisors, whose sum is σ = 78678284. Its totient is φ = 78678282.

The previous prime is 78678253. The next prime is 78678287. The reversal of 78678283 is 38287687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78678283 - 2⁹ = 78677771 is a prime.

It is not a weakly prime, because it can be changed into another prime (78678287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39339141 + 39339142.

It is an arithmetic number, because the mean of its divisors is an integer number (39339142).

Almost surely, 2^78678283 is an apocalyptic number.

78678283 is a deficient number, since it is larger than the sum of its proper divisors (1).

78678283 is an equidigital number, since it uses as much as digits as its factorization.

78678283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 49.

The square root of 78678283 is about 8870.0779590712. The cubic root of 78678283 is about 428.5007876639.

It can be divided in two parts, 78678 and 283, that added together give a square (78961 = 281²).

The spelling of 78678283 in words is "seventy-eight million, six hundred seventy-eight thousand, two hundred eighty-three".