68705783 has 2 divisors, whose sum is σ = 68705784. Its totient is φ = 68705782.

The previous prime is 68705773. The next prime is 68705831. The reversal of 68705783 is 38750786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68705783 - 2²⁰ = 67657207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68705713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34352891 + 34352892.

It is an arithmetic number, because the mean of its divisors is an integer number (34352892).

Almost surely, 2^68705783 is an apocalyptic number.

68705783 is a deficient number, since it is larger than the sum of its proper divisors (1).

68705783 is an equidigital number, since it uses as much as digits as its factorization.

68705783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 68705783 is about 8288.8951616002. The cubic root of 68705783 is about 409.5727911836.

The spelling of 68705783 in words is "sixty-eight million, seven hundred five thousand, seven hundred eighty-three".