68216768 has 14 divisors (see below), whose sum is σ = 135367776. Its totient is φ = 34108352.

The previous prime is 68216761. The next prime is 68216807. The reversal of 68216768 is 86761286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68216761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532880 + ... + 533007.

Almost surely, 2^68216768 is an apocalyptic number.

It is an amenable number.

68216768 is a deficient number, since it is larger than the sum of its proper divisors (67151008).

68216768 is a wasteful number, since it uses less digits than its factorization.

68216768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065899 (or 1065889 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 68216768 is about 8259.3442839005. The cubic root of 68216768 is about 408.5987620182.

The spelling of 68216768 in words is "sixty-eight million, two hundred sixteen thousand, seven hundred sixty-eight".