68705586469 has 4 divisors (see below), whose sum is σ = 73990631596. Its totient is φ = 63420541344.

The previous prime is 68705586457. The next prime is 68705586493. The reversal of 68705586469 is 96468550786.

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 27785556100 + 40920030369 = 166690^2 + 202287^2 .

It is a cyclic number.

It is not a de Polignac number, because 68705586469 - 2¹¹ = 68705584421 is a prime.

It is a super-2 number, since 2×68705586469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68705586469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68705586449) 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, 2642522544 + ... + 2642522569.

It is an arithmetic number, because the mean of its divisors is an integer number (18497657899).

Almost surely, 2^68705586469 is an apocalyptic number.

It is an amenable number.

68705586469 is a deficient number, since it is larger than the sum of its proper divisors (5285045127).

68705586469 is a wasteful number, since it uses less digits than its factorization.

68705586469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285045126.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 68705586469 in words is "sixty-eight billion, seven hundred five million, five hundred eighty-six thousand, four hundred sixty-nine".