68885709 has 8 divisors (see below), whose sum is σ = 93010560. Its totient is φ = 45342336.

The previous prime is 68885657. The next prime is 68885723. The reversal of 68885709 is 90758886.

It is a happy number.

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

It is not a de Polignac number, because 68885709 - 2¹² = 68881613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68885779) 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, 145092 + ... + 145565.

It is an arithmetic number, because the mean of its divisors is an integer number (11626320).

Almost surely, 2^68885709 is an apocalyptic number.

It is an amenable number.

68885709 is a deficient number, since it is larger than the sum of its proper divisors (24124851).

68885709 is a wasteful number, since it uses less digits than its factorization.

68885709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290739.

The product of its (nonzero) digits is 967680, while the sum is 51.

The square root of 68885709 is about 8299.7415019987. The cubic root of 68885709 is about 409.9300078816.

The spelling of 68885709 in words is "sixty-eight million, eight hundred eighty-five thousand, seven hundred nine".