68850009 has 12 divisors (see below), whose sum is σ = 101763376. Its totient is φ = 44832312.

The previous prime is 68849999. The next prime is 68850011. The reversal of 68850009 is 90005886.

It is not a de Polignac number, because 68850009 - 2⁴ = 68849993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68850079) 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 11 ways as a sum of consecutive naturals, for example, 88567 + ... + 89340.

Almost surely, 2^68850009 is an apocalyptic number.

It is an amenable number.

68850009 is a deficient number, since it is larger than the sum of its proper divisors (32913367).

68850009 is a wasteful number, since it uses less digits than its factorization.

68850009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177956 (or 177953 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 68850009 is about 8297.5905538897. The cubic root of 68850009 is about 409.8591802730.

The spelling of 68850009 in words is "sixty-eight million, eight hundred fifty thousand, nine".