68834009 has 6 divisors (see below), whose sum is σ = 71957466. Its totient is φ = 65840720.

The previous prime is 68833997. The next prime is 68834027. The reversal of 68834009 is 90043886.

It can be written as a sum of positive squares in only one way, i.e., 66667225 + 2166784 = 8165^2 + 1472^2 .

It is not a de Polignac number, because 68834009 - 2⁴ = 68833993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68834209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64532 + ... + 65589.

It is an arithmetic number, because the mean of its divisors is an integer number (11992911).

Almost surely, 2^68834009 is an apocalyptic number.

It is an amenable number.

68834009 is a deficient number, since it is larger than the sum of its proper divisors (3123457).

68834009 is a wasteful number, since it uses less digits than its factorization.

68834009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130167 (or 130144 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68834009 is about 8296.6263625645. The cubic root of 68834009 is about 409.8274288613.

The spelling of 68834009 in words is "sixty-eight million, eight hundred thirty-four thousand, nine".