68317507 has 2 divisors, whose sum is σ = 68317508. Its totient is φ = 68317506.

The previous prime is 68317493. The next prime is 68317537. The reversal of 68317507 is 70571386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68317507 is a prime.

It is not a weakly prime, because it can be changed into another prime (68317537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34158753 + 34158754.

It is an arithmetic number, because the mean of its divisors is an integer number (34158754).

Almost surely, 2^68317507 is an apocalyptic number.

68317507 is a deficient number, since it is larger than the sum of its proper divisors (1).

68317507 is an equidigital number, since it uses as much as digits as its factorization.

68317507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 68317507 is about 8265.4405206256. The cubic root of 68317507 is about 408.7997956087.

The spelling of 68317507 in words is "sixty-eight million, three hundred seventeen thousand, five hundred seven".