68784263 has 2 divisors, whose sum is σ = 68784264. Its totient is φ = 68784262.

The previous prime is 68784253. The next prime is 68784293. The reversal of 68784263 is 36248786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68784263 - 2¹⁸ = 68522119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68784203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34392131 + 34392132.

It is an arithmetic number, because the mean of its divisors is an integer number (34392132).

Almost surely, 2^68784263 is an apocalyptic number.

68784263 is a deficient number, since it is larger than the sum of its proper divisors (1).

68784263 is an equidigital number, since it uses as much as digits as its factorization.

68784263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 68784263 is about 8293.6278551669. The cubic root of 68784263 is about 409.7286783124.

The spelling of 68784263 in words is "sixty-eight million, seven hundred eighty-four thousand, two hundred sixty-three".