68608655 has 12 divisors (see below), whose sum is σ = 86068920. Its totient is φ = 52498512.

The previous prime is 68608637. The next prime is 68608663. The reversal of 68608655 is 55680686.

It is not a de Polignac number, because 68608655 - 2⁸ = 68608399 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 10325 + ... + 15614.

It is an arithmetic number, because the mean of its divisors is an integer number (7172410).

Almost surely, 2^68608655 is an apocalyptic number.

68608655 is a deficient number, since it is larger than the sum of its proper divisors (17460265).

68608655 is a wasteful number, since it uses less digits than its factorization.

68608655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25990 (or 25967 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 68608655 is about 8283.0341662944. The cubic root of 68608655 is about 409.3796985262.

The spelling of 68608655 in words is "sixty-eight million, six hundred eight thousand, six hundred fifty-five".