68066828 has 24 divisors (see below), whose sum is σ = 126562800. Its totient is φ = 31969728.

The previous prime is 68066819. The next prime is 68066837. The reversal of 68066828 is 82866086.

68066828 = 422² + 423² + ... + 653².

It is an interprime number because it is at equal distance from previous prime (68066819) and next prime (68066837).

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 7 ways as a sum of consecutive naturals, for example, 3638 + ... + 12221.

It is an arithmetic number, because the mean of its divisors is an integer number (5273450).

Almost surely, 2^68066828 is an apocalyptic number.

It is an amenable number.

68066828 is a deficient number, since it is larger than the sum of its proper divisors (58495972).

68066828 is a wasteful number, since it uses less digits than its factorization.

68066828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15929 (or 15927 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 68066828 is about 8250.2622988606. The cubic root of 68066828 is about 408.2991766329.

The spelling of 68066828 in words is "sixty-eight million, sixty-six thousand, eight hundred twenty-eight".