68915768 has 16 divisors (see below), whose sum is σ = 129305160. Its totient is φ = 34434400.

The previous prime is 68915767. The next prime is 68915779. The reversal of 68915768 is 86751986.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68915767) by changing a digit.

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, 21383 + ... + 24393.

Almost surely, 2^68915768 is an apocalyptic number.

It is an amenable number.

68915768 is a deficient number, since it is larger than the sum of its proper divisors (60389392).

68915768 is a wasteful number, since it uses less digits than its factorization.

68915768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878 (or 5874 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 68915768 is about 8301.5521440270. The cubic root of 68915768 is about 409.9896249605.

The spelling of 68915768 in words is "sixty-eight million, nine hundred fifteen thousand, seven hundred sixty-eight".