68915568 has 20 divisors (see below), whose sum is σ = 178032008. Its totient is φ = 22971840.

The previous prime is 68915557. The next prime is 68915579. The reversal of 68915568 is 86551986.

It is an interprime number because it is at equal distance from previous prime (68915557) and next prime (68915579).

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1435741 = 68915568 / (6 + 8 + 9 + 1 + 5 + 5 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717823 + ... + 717918.

Almost surely, 2^68915568 is an apocalyptic number.

It is an amenable number.

68915568 is an abundant number, since it is smaller than the sum of its proper divisors (109116440).

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

68915568 is a wasteful number, since it uses less digits than its factorization.

68915568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435752 (or 1435746 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 68915568 is about 8301.5400980782. The cubic root of 68915568 is about 409.9892283508.

The spelling of 68915568 in words is "sixty-eight million, nine hundred fifteen thousand, five hundred sixty-eight".