68905168 has 20 divisors (see below), whose sum is σ = 133703620. Its totient is φ = 34401024.

The previous prime is 68905163. The next prime is 68905181. The reversal of 68905168 is 86150986.

It can be written as a sum of positive squares in 2 ways, for example, as 56430144 + 12475024 = 7512^2 + 3532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68905163) 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, 9268 + ... + 14956.

It is an arithmetic number, because the mean of its divisors is an integer number (6685181).

Almost surely, 2^68905168 is an apocalyptic number.

It is an amenable number.

68905168 is a deficient number, since it is larger than the sum of its proper divisors (64798452).

68905168 is a wasteful number, since it uses less digits than its factorization.

68905168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454 (or 6448 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 68905168 is about 8300.9136846494. The cubic root of 68905168 is about 409.9686035843.

The spelling of 68905168 in words is "sixty-eight million, nine hundred five thousand, one hundred sixty-eight".