68813569 has 16 divisors (see below), whose sum is σ = 80044416. Its totient is φ = 58464000.

The previous prime is 68813567. The next prime is 68813609. The reversal of 68813569 is 96531886.

It is a cyclic number.

It is not a de Polignac number, because 68813569 - 2¹ = 68813567 is a prime.

It is a super-2 number, since 2×68813569² = 9470614557035522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68813561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27019 + ... + 29455.

It is an arithmetic number, because the mean of its divisors is an integer number (5002776).

Almost surely, 2^68813569 is an apocalyptic number.

It is an amenable number.

68813569 is a deficient number, since it is larger than the sum of its proper divisors (11230847).

68813569 is a wasteful number, since it uses less digits than its factorization.

68813569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616.

The product of its digits is 311040, while the sum is 46.

The square root of 68813569 is about 8295.3944451123. The cubic root of 68813569 is about 409.7868592743.

The spelling of 68813569 in words is "sixty-eight million, eight hundred thirteen thousand, five hundred sixty-nine".