68776247 has 2 divisors, whose sum is σ = 68776248. Its totient is φ = 68776246.

The previous prime is 68776231. The next prime is 68776261. The reversal of 68776247 is 74267786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68776247 - 2⁴ = 68776231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68776217) 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, 34388123 + 34388124.

It is an arithmetic number, because the mean of its divisors is an integer number (34388124).

Almost surely, 2^68776247 is an apocalyptic number.

68776247 is a deficient number, since it is larger than the sum of its proper divisors (1).

68776247 is an equidigital number, since it uses as much as digits as its factorization.

68776247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 47.

The square root of 68776247 is about 8293.1445785058. The cubic root of 68776247 is about 409.7127613350.

The spelling of 68776247 in words is "sixty-eight million, seven hundred seventy-six thousand, two hundred forty-seven".