68257828 has 6 divisors (see below), whose sum is σ = 119451206. Its totient is φ = 34128912.

The previous prime is 68257811. The next prime is 68257829. The reversal of 68257828 is 82875286.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 61591104 + 6666724 = 7848^2 + 2582^2 .

It is not an unprimeable number, because it can be changed into a prime (68257829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8532225 + ... + 8532232.

Almost surely, 2^68257828 is an apocalyptic number.

It is an amenable number.

68257828 is a deficient number, since it is larger than the sum of its proper divisors (51193378).

68257828 is a wasteful number, since it uses less digits than its factorization.

68257828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17064461 (or 17064459 counting only the distinct ones).

The product of its digits is 430080, while the sum is 46.

The square root of 68257828 is about 8261.8295794576. The cubic root of 68257828 is about 408.6807247610.

The spelling of 68257828 in words is "sixty-eight million, two hundred fifty-seven thousand, eight hundred twenty-eight".