68910688 has 48 divisors (see below), whose sum is σ = 169150464. Its totient is φ = 26847360.

The previous prime is 68910679. The next prime is 68910689. The reversal of 68910688 is 88601986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68910689) 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 7 ways as a sum of consecutive naturals, for example, 11520 + ... + 16447.

It is an arithmetic number, because the mean of its divisors is an integer number (3523968).

Almost surely, 2^68910688 is an apocalyptic number.

It is an amenable number.

68910688 is an abundant number, since it is smaller than the sum of its proper divisors (100239776).

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

68910688 is a wasteful number, since it uses less digits than its factorization.

68910688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27995 (or 27987 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 68910688 is about 8301.2461715094. The cubic root of 68910688 is about 409.9795508341.

The spelling of 68910688 in words is "sixty-eight million, nine hundred ten thousand, six hundred eighty-eight".