68388699 has 8 divisors (see below), whose sum is σ = 94329360. Its totient is φ = 44020256.

The previous prime is 68388689. The next prime is 68388701. The reversal of 68388699 is 99688386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68388699 - 2⁷ = 68388571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68388659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392952 + ... + 393125.

It is an arithmetic number, because the mean of its divisors is an integer number (11791170).

Almost surely, 2^68388699 is an apocalyptic number.

68388699 is a deficient number, since it is larger than the sum of its proper divisors (25940661).

68388699 is a wasteful number, since it uses less digits than its factorization.

68388699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786109.

The product of its digits is 4478976, while the sum is 57.

The square root of 68388699 is about 8269.7460057731. The cubic root of 68388699 is about 408.9417463956.

The spelling of 68388699 in words is "sixty-eight million, three hundred eighty-eight thousand, six hundred ninety-nine".