68029568 has 16 divisors (see below), whose sum is σ = 135527910. Its totient is φ = 34014720.

The previous prime is 68029567. The next prime is 68029571. The reversal of 68029568 is 86592086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 64 = 8248^2 + 8^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (68029567) 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, 265613 + ... + 265868.

Almost surely, 2^68029568 is an apocalyptic number.

It is an amenable number.

68029568 is a deficient number, since it is larger than the sum of its proper divisors (67498342).

68029568 is an equidigital number, since it uses as much as digits as its factorization.

68029568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531495 (or 531483 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 68029568 is about 8248.0038797275. The cubic root of 68029568 is about 408.2246616083.

The spelling of 68029568 in words is "sixty-eight million, twenty-nine thousand, five hundred sixty-eight".