68635689 has 8 divisors (see below), whose sum is σ = 93241152. Its totient is φ = 44893680.

The previous prime is 68635687. The next prime is 68635709. The reversal of 68635689 is 98653686.

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

It is not a de Polignac number, because 68635689 - 2¹ = 68635687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68635687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215677 + ... + 215994.

It is an arithmetic number, because the mean of its divisors is an integer number (11655144).

Almost surely, 2^68635689 is an apocalyptic number.

It is an amenable number.

68635689 is a deficient number, since it is larger than the sum of its proper divisors (24605463).

68635689 is a wasteful number, since it uses less digits than its factorization.

68635689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431727.

The product of its digits is 1866240, while the sum is 51.

The square root of 68635689 is about 8284.6658954963. The cubic root of 68635689 is about 409.4334610215.

The spelling of 68635689 in words is "sixty-eight million, six hundred thirty-five thousand, six hundred eighty-nine".