68886826369 has 9 divisors (see below), whose sum is σ = 73182095427. Its totient is φ = 64830460704.

The previous prime is 68886826367. The next prime is 68886826391. The reversal of 68886826369 is 96362868886.

The square root of 68886826369 is 262463.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 53631612225 + 15255214144 = 231585^2 + 123512^2 .

It is not a de Polignac number, because 68886826369 - 2¹ = 68886826367 is a prime.

It is a super-2 number, since 2×68886826369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68886826298 and 68886826307.

It is not an unprimeable number, because it can be changed into a prime (68886826367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4454152 + ... + 4469590.

Almost surely, 2^68886826369 is an apocalyptic number.

68886826369 is the 262463-rd square number.

68886826369 is the 131232-nd centered octagonal number.

It is an amenable number.

68886826369 is a deficient number, since it is larger than the sum of its proper divisors (4295269058).

68886826369 is an frugal number, since it uses more digits than its factorization.

68886826369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30912 (or 15456 counting only the distinct ones).

The product of its digits is 286654464, while the sum is 70.

The spelling of 68886826369 in words is "sixty-eight billion, eight hundred eighty-six million, eight hundred twenty-six thousand, three hundred sixty-nine".