68680075469 has 8 divisors (see below), whose sum is σ = 68854285752. Its totient is φ = 68505937920.

The previous prime is 68680075459. The next prime is 68680075481. The reversal of 68680075469 is 96457008686.

It can be written as a sum of positive squares in 4 ways, for example, as 491198569 + 68188876900 = 22163^2 + 261130^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68680075469 is a prime.

It is a super-2 number, since 2×68680075469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68680075439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215859 + ... + 2246639.

It is an arithmetic number, because the mean of its divisors is an integer number (8606785719).

Almost surely, 2^68680075469 is an apocalyptic number.

It is an amenable number.

68680075469 is a deficient number, since it is larger than the sum of its proper divisors (174210283).

68680075469 is a wasteful number, since it uses less digits than its factorization.

68680075469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36367.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 68680075469 in words is "sixty-eight billion, six hundred eighty million, seventy-five thousand, four hundred sixty-nine".