68675428 has 6 divisors (see below), whose sum is σ = 120182006. Its totient is φ = 34337712.

The previous prime is 68675423. The next prime is 68675437. The reversal of 68675428 is 82457686.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 1304164 = 8208^2 + 1142^2 .

It is not an unprimeable number, because it can be changed into a prime (68675423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8584425 + ... + 8584432.

Almost surely, 2^68675428 is an apocalyptic number.

It is an amenable number.

68675428 is a deficient number, since it is larger than the sum of its proper divisors (51506578).

68675428 is a wasteful number, since it uses less digits than its factorization.

68675428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17168861 (or 17168859 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 68675428 is about 8287.0638950113. The cubic root of 68675428 is about 409.5124643187.

The spelling of 68675428 in words is "sixty-eight million, six hundred seventy-five thousand, four hundred twenty-eight".