68705056907 has 4 divisors (see below), whose sum is σ = 69335378640. Its totient is φ = 68074735176.

The previous prime is 68705056891. The next prime is 68705056909. The reversal of 68705056907 is 70965050786.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68705056907 - 2⁴ = 68705056891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68705056909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315160703 + ... + 315160920.

It is an arithmetic number, because the mean of its divisors is an integer number (17333844660).

Almost surely, 2^68705056907 is an apocalyptic number.

68705056907 is a deficient number, since it is larger than the sum of its proper divisors (630321733).

68705056907 is a wasteful number, since it uses less digits than its factorization.

68705056907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630321732.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 68705056907 in words is "sixty-eight billion, seven hundred five million, fifty-six thousand, nine hundred seven".