68838713 has 4 divisors (see below), whose sum is σ = 70517748. Its totient is φ = 67159680.

The previous prime is 68838709. The next prime is 68838719. The reversal of 68838713 is 31783886.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28858384 + 39980329 = 5372^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 68838713 - 2² = 68838709 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68838719) 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, 839456 + ... + 839537.

It is an arithmetic number, because the mean of its divisors is an integer number (17629437).

Almost surely, 2^68838713 is an apocalyptic number.

It is an amenable number.

68838713 is a deficient number, since it is larger than the sum of its proper divisors (1679035).

68838713 is a wasteful number, since it uses less digits than its factorization.

68838713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679034.

The product of its digits is 193536, while the sum is 44.

The square root of 68838713 is about 8296.9098464428. The cubic root of 68838713 is about 409.8367642869.

The spelling of 68838713 in words is "sixty-eight million, eight hundred thirty-eight thousand, seven hundred thirteen".