68538307 has 2 divisors, whose sum is σ = 68538308. Its totient is φ = 68538306.

The previous prime is 68538289. The next prime is 68538331. The reversal of 68538307 is 70383586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68538307 - 2¹⁵ = 68505539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68538307.

It is not a weakly prime, because it can be changed into another prime (68538007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34269153 + 34269154.

It is an arithmetic number, because the mean of its divisors is an integer number (34269154).

Almost surely, 2^68538307 is an apocalyptic number.

68538307 is a deficient number, since it is larger than the sum of its proper divisors (1).

68538307 is an equidigital number, since it uses as much as digits as its factorization.

68538307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 68538307 is about 8278.7865656749. The cubic root of 68538307 is about 409.2397312889.

The spelling of 68538307 in words is "sixty-eight million, five hundred thirty-eight thousand, three hundred seven".