68680688 has 10 divisors (see below), whose sum is σ = 133068864. Its totient is φ = 34340336.

The previous prime is 68680681. The next prime is 68680721. The reversal of 68680688 is 88608686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68680681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2146256 + ... + 2146287.

Almost surely, 2^68680688 is an apocalyptic number.

It is an amenable number.

68680688 is a deficient number, since it is larger than the sum of its proper divisors (64388176).

68680688 is a wasteful number, since it uses less digits than its factorization.

68680688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292551 (or 4292545 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 68680688 is about 8287.3812510346. The cubic root of 68680688 is about 409.5229192011.

The spelling of 68680688 in words is "sixty-eight million, six hundred eighty thousand, six hundred eighty-eight".