68240768 has 32 divisors (see below), whose sum is σ = 136323000. Its totient is φ = 34026496.

The previous prime is 68240749. The next prime is 68240779. The reversal of 68240768 is 86704286.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 83948 + ... + 84756.

Almost surely, 2^68240768 is an apocalyptic number.

It is an amenable number.

68240768 is a deficient number, since it is larger than the sum of its proper divisors (68082232).

68240768 is an equidigital number, since it uses as much as digits as its factorization.

68240768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 68240768 is about 8260.7970559747. The cubic root of 68240768 is about 408.6466740921.

The spelling of 68240768 in words is "sixty-eight million, two hundred forty thousand, seven hundred sixty-eight".