68881869 has 12 divisors (see below), whose sum is σ = 113709856. Its totient is φ = 39361032.

The previous prime is 68881861. The next prime is 68881877. The reversal of 68881869 is 96818886.

It is an interprime number because it is at equal distance from previous prime (68881861) and next prime (68881877).

It is not a de Polignac number, because 68881869 - 2³ = 68881861 is a prime.

It is a super-2 number, since 2×68881869² = 9489423753866322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68881861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546619 + ... + 546744.

Almost surely, 2^68881869 is an apocalyptic number.

It is an amenable number.

68881869 is a deficient number, since it is larger than the sum of its proper divisors (44827987).

68881869 is a wasteful number, since it uses less digits than its factorization.

68881869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093376 (or 1093373 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 68881869 is about 8299.5101662689. The cubic root of 68881869 is about 409.9223906245.

The spelling of 68881869 in words is "sixty-eight million, eight hundred eighty-one thousand, eight hundred sixty-nine".