67768768 has 28 divisors (see below), whose sum is σ = 137022840. Its totient is φ = 33243392.

The previous prime is 67768751. The next prime is 67768819. The reversal of 67768768 is 86786776.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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, 6598 + ... + 13381.

Almost surely, 2^67768768 is an apocalyptic number.

It is an amenable number.

67768768 is an abundant number, since it is smaller than the sum of its proper divisors (69254072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67768768 is a wasteful number, since it uses less digits than its factorization.

67768768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044 (or 20034 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 55.

The square root of 67768768 is about 8232.1788124408. The cubic root of 67768768 is about 407.7023331836.

The spelling of 67768768 in words is "sixty-seven million, seven hundred sixty-eight thousand, seven hundred sixty-eight".