68130868 has 12 divisors (see below), whose sum is σ = 128400580. Its totient is φ = 31444992.

The previous prime is 68130841. The next prime is 68130929. The reversal of 68130868 is 86803186.

It can be written as a sum of positive squares in 2 ways, for example, as 41319184 + 26811684 = 6428^2 + 5178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68130868.

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, 655053 + ... + 655156.

Almost surely, 2^68130868 is an apocalyptic number.

It is an amenable number.

68130868 is a deficient number, since it is larger than the sum of its proper divisors (60269712).

68130868 is a wasteful number, since it uses less digits than its factorization.

68130868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310226 (or 1310224 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 68130868 is about 8254.1424751454. The cubic root of 68130868 is about 408.4271845732.

The spelling of 68130868 in words is "sixty-eight million, one hundred thirty thousand, eight hundred sixty-eight".