68765688 has 48 divisors (see below), whose sum is σ = 192254400. Its totient is φ = 22181760.

The previous prime is 68765681. The next prime is 68765737. The reversal of 68765688 is 88656786.

68765688 is a `hidden beast` number, since 6 + 8 + 76 + 568 + 8 = 666.

It is a super-2 number, since 2×68765688² = 9457439692226688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68765681) 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, 13173 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (4005300).

Almost surely, 2^68765688 is an apocalyptic number.

It is an amenable number.

68765688 is an abundant number, since it is smaller than the sum of its proper divisors (123488712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68765688 is a wasteful number, since it uses less digits than its factorization.

68765688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30852 (or 30845 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 68765688 is about 8292.5079439214. The cubic root of 68765688 is about 409.6917929598.

The spelling of 68765688 in words is "sixty-eight million, seven hundred sixty-five thousand, six hundred eighty-eight".