68908907 has 2 divisors, whose sum is σ = 68908908. Its totient is φ = 68908906.

The previous prime is 68908891. The next prime is 68908949. The reversal of 68908907 is 70980986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68908907 - 2⁴ = 68908891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68901907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34454453 + 34454454.

It is an arithmetic number, because the mean of its divisors is an integer number (34454454).

Almost surely, 2^68908907 is an apocalyptic number.

68908907 is a deficient number, since it is larger than the sum of its proper divisors (1).

68908907 is an equidigital number, since it uses as much as digits as its factorization.

68908907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 68908907 is about 8301.1388977658. The cubic root of 68908907 is about 409.9760188234.

The spelling of 68908907 in words is "sixty-eight million, nine hundred eight thousand, nine hundred seven".