68670928 has 10 divisors (see below), whose sum is σ = 133049954. Its totient is φ = 34335456.

The previous prime is 68670787. The next prime is 68670929. The reversal of 68670928 is 82907686.

It can be written as a sum of positive squares in only one way, i.e., 62853184 + 5817744 = 7928^2 + 2412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68670929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145951 + ... + 2145982.

Almost surely, 2^68670928 is an apocalyptic number.

It is an amenable number.

68670928 is a deficient number, since it is larger than the sum of its proper divisors (64379026).

68670928 is a wasteful number, since it uses less digits than its factorization.

68670928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291941 (or 4291935 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 68670928 is about 8286.7923830635. The cubic root of 68670928 is about 409.5035196039.

The spelling of 68670928 in words is "sixty-eight million, six hundred seventy thousand, nine hundred twenty-eight".