68708663 has 2 divisors, whose sum is σ = 68708664. Its totient is φ = 68708662.

The previous prime is 68708657. The next prime is 68708683. The reversal of 68708663 is 36680786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68708663 - 2⁶ = 68708599 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 (68708603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34354331 + 34354332.

It is an arithmetic number, because the mean of its divisors is an integer number (34354332).

Almost surely, 2^68708663 is an apocalyptic number.

68708663 is a deficient number, since it is larger than the sum of its proper divisors (1).

68708663 is an equidigital number, since it uses as much as digits as its factorization.

68708663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 68708663 is about 8289.0688861898. The cubic root of 68708663 is about 409.5785139098.

The spelling of 68708663 in words is "sixty-eight million, seven hundred eight thousand, six hundred sixty-three".